diff --git a/lib/views/screens/admin/project_overview/EditProjectScreenAdmin.dart b/lib/views/screens/admin/project_overview/EditProjectScreenAdmin.dart
index 0cc2369..2187e80 100644
--- a/lib/views/screens/admin/project_overview/EditProjectScreenAdmin.dart
+++ b/lib/views/screens/admin/project_overview/EditProjectScreenAdmin.dart
@@ -223,8 +223,8 @@ class _EditProjectScreenAdminState extends State<EditProjectScreenAdmin> {
         _formData.othersRequired = userDetails['project']['OtherRequired'];
         // // Signature
         _formData.piUserID = userDetails['project']['CreatorUserID'];
-        _formData.coPiUserID = userDetails['project']['CoPiUserID'];
-        _formData.studentUserID = userDetails['project']['StudentUserID'];
+        _formData.coPiUserID = userDetails['project']['CoPiUserID'] ?? 0;
+        _formData.studentUserID = userDetails['project']['StudentUserID'] ?? 0;
 
         _formData.piSealLocation = userDetails['project']['CreatorUserSealLocation'];
         String piSealfilePath = _formData.piSealLocation.isNotEmpty
@@ -2468,7 +2468,7 @@ class FormData {
   // String studentId = '';
   // String studentRegNo = '';
   // String studentName = '';
-  int studentUserID = 0;
+  int? studentUserID;
   // String coPiReferencesOfLatestPublications = '';
   // String coPiExperienceInTeaching = '';
   // String coPiExperienceInResearch = '';
@@ -2483,7 +2483,7 @@ class FormData {
   // String coPiAddress = '';
   // String coPiPhone = '';
   // String coPiName = '';
-  int coPiUserID = 0;
+  int? coPiUserID;
   // String piReferencesOfLatestPublications = '';
   // int piExperienceInTeaching = 0;
   // int piExperienceInResearch = 0;
@@ -2578,10 +2578,11 @@ class _CoPiState extends State<CoPi> {
                       } else if (snapshot.hasError) {
                         return Text('Error: ${snapshot.error}');
                       } else {
-                        User? selectedUser = snapshot.data?.firstWhere(
-                          (user) => user.userId == widget.formData.coPiUserID,
-                          orElse: () => snapshot.data!.first,
-                        );
+                        User? selectedUser = widget.formData.coPiUserID != 0
+                            ? snapshot.data?.firstWhere(
+                                (user) => user.userId == widget.formData.coPiUserID,
+                              )
+                            : null;
                         return FormBuilderDropdown<User>(
                           name: 'co_pi_name',
                           initialValue: selectedUser,
@@ -2591,8 +2592,8 @@ class _CoPiState extends State<CoPi> {
                             border: OutlineInputBorder(),
                             floatingLabelBehavior: FloatingLabelBehavior.always,
                           ),
-                          validator: FormBuilderValidators.required(),
-                          autovalidateMode: AutovalidateMode.onUserInteraction,
+                          // validator: FormBuilderValidators.required(),
+                          autovalidateMode: AutovalidateMode.disabled,
                           items: snapshot.data!
                               .map((user) => DropdownMenuItem<User>(
                                     value: user,
@@ -2602,7 +2603,7 @@ class _CoPiState extends State<CoPi> {
                           onChanged: (User? user) {
                             if (user != null) {
                               setState(() {
-                                widget.formData.coPiUserID = user.userId;
+                                widget.formData.coPiUserID = user?.userId;
                               });
                             }
                           },
@@ -2655,10 +2656,11 @@ class _StudentState extends State<Student> {
                       } else if (snapshot.hasError) {
                         return Text('Error: ${snapshot.error}');
                       } else {
-                        User? selectedUser = snapshot.data?.firstWhere(
-                          (user) => user.userId == widget.formData.studentUserID,
-                          orElse: () => snapshot.data!.first,
-                        );
+                        User? selectedUser = widget.formData.studentUserID != 0
+                            ? snapshot.data?.firstWhere(
+                                (user) => user.userId == widget.formData.studentUserID,
+                              )
+                            : null;
                         return FormBuilderDropdown<User>(
                           name: 'student_name',
                           initialValue: selectedUser,
@@ -2668,8 +2670,8 @@ class _StudentState extends State<Student> {
                             border: OutlineInputBorder(),
                             floatingLabelBehavior: FloatingLabelBehavior.always,
                           ),
-                          validator: FormBuilderValidators.required(),
-                          autovalidateMode: AutovalidateMode.onUserInteraction,
+                          // validator: FormBuilderValidators.required(),
+                          autovalidateMode: AutovalidateMode.disabled,
                           items: snapshot.data!
                               .map((user) => DropdownMenuItem<User>(
                                     value: user,
@@ -2679,7 +2681,7 @@ class _StudentState extends State<Student> {
                           onChanged: (User? user) {
                             if (user != null) {
                               setState(() {
-                                widget.formData.studentUserID = user.userId;
+                                widget.formData.studentUserID = user?.userId;
                               });
                             }
                           },
diff --git a/lib/views/screens/admin/project_overview/ViewProjectScreenAdmin.dart b/lib/views/screens/admin/project_overview/ViewProjectScreenAdmin.dart
index b8558c7..2ca5dc5 100644
--- a/lib/views/screens/admin/project_overview/ViewProjectScreenAdmin.dart
+++ b/lib/views/screens/admin/project_overview/ViewProjectScreenAdmin.dart
@@ -152,8 +152,8 @@ class _ViewProjectScreenAdminState extends State<ViewProjectScreenAdmin> {
         _formData.othersRequired = userDetails['project']['OtherRequired'];
         // // Signature
         _formData.piUserID = userDetails['project']['CreatorUserID'];
-        _formData.coPiUserID = userDetails['project']['CoPiUserID'];
-        _formData.studentUserID = userDetails['project']['StudentUserID'];
+        _formData.coPiUserID = userDetails['project']['CoPiUserID'] ?? 0;
+        _formData.studentUserID = userDetails['project']['StudentUserID'] ?? 0;
 
         _formData.piSealLocation = userDetails['project']['CreatorUserSealLocation'];
         String piSealfilePath = _formData.piSealLocation.isNotEmpty
@@ -216,26 +216,36 @@ class _ViewProjectScreenAdminState extends State<ViewProjectScreenAdmin> {
         }
 
         // get student user details
-        final studentUserDetails = await ApiService.getSpecificUser(
-          _formData.studentUserID,
-        );
-        if (studentUserDetails['statuscode'] == 401) {
-          // Handle token expiration
-          final dialog = AwesomeDialog(
-            context: context,
-            dialogType: DialogType.error,
-            desc: "Token expired. Please login again.",
-            width: kDialogWidth,
-            btnOkText: 'OK',
-            btnOkOnPress: () {},
+        if (_formData.studentUserID != null && _formData.studentUserID != 0) {
+          final studentUserDetails = await ApiService.getSpecificUser(
+            _formData.studentUserID,
           );
-          dialog.show();
+          if (studentUserDetails['statuscode'] == 401) {
+            // Handle token expiration
+            final dialog = AwesomeDialog(
+              context: context,
+              dialogType: DialogType.error,
+              desc: "Token expired. Please login again.",
+              width: kDialogWidth,
+              btnOkText: 'OK',
+              btnOkOnPress: () {},
+            );
+            dialog.show();
+          } else {
+            _formData.studentName = studentUserDetails['user']['FirstName'] + ' ' + studentUserDetails['user']['LastName'];
+            _formData.studentId = studentUserDetails['user']['StudentID'].toString();
+            _formData.studentRegNo = studentUserDetails['user']['StudentRegNo'] ?? '';
+            _formData.firstEnrollmentSemester = studentUserDetails['user']['FirstEnrollmentSemester'] ?? '';
+            _formData.cgpaUndergraduateLevel = studentUserDetails['user']['UndergraduateCGPALevel'] ?? '';
+          }
+        } else {
+          // Reset student related fields if studentUserID is null or 0
+          _formData.studentName = '';
+          _formData.studentId = '';
+          _formData.studentRegNo = '';
+          _formData.firstEnrollmentSemester = '';
+          _formData.cgpaUndergraduateLevel = '';
         }
-        _formData.studentName = studentUserDetails['user']['FirstName'] + ' ' + studentUserDetails['user']['LastName'];
-        _formData.studentId = studentUserDetails['user']['StudentID'].toString();
-        _formData.studentRegNo = studentUserDetails['user']['StudentRegNo'] ?? '';
-        _formData.firstEnrollmentSemester = studentUserDetails['user']['FirstEnrollmentSemester'] ?? '';
-        _formData.cgpaUndergraduateLevel = studentUserDetails['user']['UndergraduateCGPALevel'] ?? '';
 
         // get PI user details
         final piUserDetails = await ApiService.getSpecificUser(
@@ -275,41 +285,66 @@ class _ViewProjectScreenAdminState extends State<ViewProjectScreenAdmin> {
         _formData.piReferencesOfLatestPublications = piUserDetails['user']['ReferencesOfLatestPublications'] ?? '';
 
         // get CO-PI user details
-        final coPiUserDetails = await ApiService.getSpecificUser(
-          _formData.coPiUserID,
-        );
-        if (coPiUserDetails['statuscode'] == 401) {
-          // Handle token expiration
-          final dialog = AwesomeDialog(
-            context: context,
-            dialogType: DialogType.error,
-            desc: "Token expired. Please login again.",
-            width: kDialogWidth,
-            btnOkText: 'OK',
-            btnOkOnPress: () {},
+        if (_formData.coPiUserID != null && _formData.coPiUserID != 0) {
+          final coPiUserDetails = await ApiService.getSpecificUser(
+            _formData.coPiUserID,
           );
-          dialog.show();
+          if (coPiUserDetails['statuscode'] == 401) {
+            // Handle token expiration
+            final dialog = AwesomeDialog(
+              context: context,
+              dialogType: DialogType.error,
+              desc: "Token expired. Please login again.",
+              width: kDialogWidth,
+              btnOkText: 'OK',
+              btnOkOnPress: () {},
+            );
+            dialog.show();
+          } else {
+            _formData.coPiName = coPiUserDetails['user']['FirstName'] + ' ' + coPiUserDetails['user']['LastName'];
+            _formData.coPiPresentAddress = coPiUserDetails['user']['PresentAddress'] ?? '';
+            _formData.coPiPermanentAddress = coPiUserDetails['user']['PermanentAddress'] ?? '';
+            _formData.coPiPositionEnglish = coPiUserDetails['user']['PositionEnglish'] ?? '';
+            _formData.coPiDepartmentName = coPiUserDetails['user']['DepartmentName'] ?? '';
+            _formData.coPiFacultyName = coPiUserDetails['user']['FacultyName'] ?? '';
+            _formData.coPiBasicPay = coPiUserDetails['user']['BasicPay'].toString();
+            _formData.coPiInstituteLocation = coPiUserDetails['user']['InstituteLocation'] ?? '';
+            _formData.coPiInstituteName = coPiUserDetails['user']['InstituteName'] ?? '';
+            _formData.coPiEmail = coPiUserDetails['user']['Email'] ?? '';
+            _formData.coPiPhone = coPiUserDetails['user']['Phone'] ?? '';
+            _formData.coPiSalaryScale = coPiUserDetails['user']['SalaryScale'] ?? '';
+            _formData.coPiHighestAcademicQualification = coPiUserDetails['user']['HighestAcademicQualification'] ?? '';
+            _formData.coPiHighestAcademicQualificationUniversity = coPiUserDetails['user']['HighestAcademicQualificationUniversity'] ?? '';
+            _formData.coPiHighestAcademicQualificationCountry = coPiUserDetails['user']['HighestAcademicQualificationCountry'] ?? '';
+            _formData.coPiHighestAcademicQualificationYear = coPiUserDetails['user']['HighestAcademicQualificationYear'].toString();
+            _formData.coPiAreaOfExpertise = coPiUserDetails['user']['AreaOfExpertise'] ?? '';
+            _formData.coPiExperienceInResearch = coPiUserDetails['user']['ExperienceInResearch'].toString();
+            _formData.coPiExperienceInTeaching = coPiUserDetails['user']['Teaching'].toString();
+            _formData.coPiReferencesOfLatestPublications = coPiUserDetails['user']['ReferencesOfLatestPublications'] ?? '';
+          }
+        } else {
+          // Reset CO-PI related fields if coPiUserID is null or 0
+          _formData.coPiName = '';
+          _formData.coPiPresentAddress = '';
+          _formData.coPiPermanentAddress = '';
+          _formData.coPiPositionEnglish = '';
+          _formData.coPiDepartmentName = '';
+          _formData.coPiFacultyName = '';
+          _formData.coPiBasicPay = '';
+          _formData.coPiInstituteLocation = '';
+          _formData.coPiInstituteName = '';
+          _formData.coPiEmail = '';
+          _formData.coPiPhone = '';
+          _formData.coPiSalaryScale = '';
+          _formData.coPiHighestAcademicQualification = '';
+          _formData.coPiHighestAcademicQualificationUniversity = '';
+          _formData.coPiHighestAcademicQualificationCountry = '';
+          _formData.coPiHighestAcademicQualificationYear = '';
+          _formData.coPiAreaOfExpertise = '';
+          _formData.coPiExperienceInResearch = '';
+          _formData.coPiExperienceInTeaching = '';
+          _formData.coPiReferencesOfLatestPublications = '';
         }
-        _formData.coPiName = coPiUserDetails['user']['FirstName'] + ' ' + coPiUserDetails['user']['LastName'];
-        _formData.coPiPresentAddress = coPiUserDetails['user']['PresentAddress'] ?? '';
-        _formData.coPiPermanentAddress = coPiUserDetails['user']['PermanentAddress'] ?? '';
-        _formData.coPiPositionEnglish = coPiUserDetails['user']['PositionEnglish'] ?? '';
-        _formData.coPiDepartmentName = coPiUserDetails['user']['DepartmentName'] ?? '';
-        _formData.coPiFacultyName = coPiUserDetails['user']['FacultyName'] ?? '';
-        _formData.coPiBasicPay = coPiUserDetails['user']['BasicPay'].toString();
-        _formData.coPiInstituteLocation = coPiUserDetails['user']['InstituteLocation'] ?? '';
-        _formData.coPiInstituteName = coPiUserDetails['user']['InstituteName'] ?? '';
-        _formData.coPiEmail = coPiUserDetails['user']['Email'] ?? '';
-        _formData.coPiPhone = coPiUserDetails['user']['Phone'] ?? '';
-        _formData.coPiSalaryScale = coPiUserDetails['user']['SalaryScale'] ?? '';
-        _formData.coPiHighestAcademicQualification = coPiUserDetails['user']['HighestAcademicQualification'] ?? '';
-        _formData.coPiHighestAcademicQualificationUniversity = coPiUserDetails['user']['HighestAcademicQualificationUniversity'] ?? '';
-        _formData.coPiHighestAcademicQualificationCountry = coPiUserDetails['user']['HighestAcademicQualificationCountry'] ?? '';
-        _formData.coPiHighestAcademicQualificationYear = coPiUserDetails['user']['HighestAcademicQualificationYear'].toString();
-        _formData.coPiAreaOfExpertise = coPiUserDetails['user']['AreaOfExpertise'] ?? '';
-        _formData.coPiExperienceInResearch = coPiUserDetails['user']['ExperienceInResearch'].toString();
-        _formData.coPiExperienceInTeaching = coPiUserDetails['user']['Teaching'].toString();
-        _formData.coPiReferencesOfLatestPublications = coPiUserDetails['user']['ReferencesOfLatestPublications'] ?? '';
 
         final reviewerUserId = await ApiService.getReviewerUserId(projectId);
         if (reviewerUserId['statuscode'] == 401) {
diff --git a/lib/views/screens/user/project_panel/CreateProject.dart b/lib/views/screens/user/project_panel/CreateProject.dart
index 59f3119..fc9e357 100644
--- a/lib/views/screens/user/project_panel/CreateProject.dart
+++ b/lib/views/screens/user/project_panel/CreateProject.dart
@@ -2906,7 +2906,7 @@ class FormData {
   // String studentId = '';
   // String studentRegNo = '';
   // String studentName = '';
-  int studentUserID = 0;
+  int? studentUserID;
   // String coPiReferencesOfLatestPublications = '';
   // String coPiExperienceInTeaching = '';
   // String coPiExperienceInResearch = '';
@@ -2921,7 +2921,7 @@ class FormData {
   // String coPiAddress = '';
   // String coPiPhone = '';
   // String coPiName = '';
-  int coPiUserID = 0;
+  int? coPiUserID;
   // String piReferencesOfLatestPublications = '';
   // int piExperienceInTeaching = 0;
   // int piExperienceInResearch = 0;
@@ -3027,8 +3027,8 @@ class _CoPiState extends State<CoPi> {
                             border: OutlineInputBorder(),
                             floatingLabelBehavior: FloatingLabelBehavior.always,
                           ),
-                          validator: FormBuilderValidators.required(),
-                          autovalidateMode: AutovalidateMode.onUserInteraction,
+                          // validator: FormBuilderValidators.required(),
+                          autovalidateMode: AutovalidateMode.disabled,
                           items: snapshot.data!
                               .map((user) => DropdownMenuItem<User>(
                                     value: user,
@@ -3038,7 +3038,7 @@ class _CoPiState extends State<CoPi> {
                           onChanged: (User? user) {
                             if (user != null) {
                               setState(() {
-                                widget.formData.coPiUserID = user.userId;
+                                widget.formData.coPiUserID = user?.userId;
                               });
                             }
                           },
@@ -3099,8 +3099,8 @@ class _StudentState extends State<Student> {
                             border: OutlineInputBorder(),
                             floatingLabelBehavior: FloatingLabelBehavior.always,
                           ),
-                          validator: FormBuilderValidators.required(),
-                          autovalidateMode: AutovalidateMode.onUserInteraction,
+                          // validator: FormBuilderValidators.required(),
+                          autovalidateMode: AutovalidateMode.disabled,
                           items: snapshot.data!
                               .map((user) => DropdownMenuItem<User>(
                                     value: user,
@@ -3110,7 +3110,7 @@ class _StudentState extends State<Student> {
                           onChanged: (User? user) {
                             if (user != null) {
                               setState(() {
-                                widget.formData.studentUserID = user.userId;
+                                widget.formData.studentUserID = user?.userId;
                               });
                             }
                           },
diff --git a/lib/views/screens/user/project_panel/EditProjectScreen.dart b/lib/views/screens/user/project_panel/EditProjectScreen.dart
index 3905862..10cf44b 100644
--- a/lib/views/screens/user/project_panel/EditProjectScreen.dart
+++ b/lib/views/screens/user/project_panel/EditProjectScreen.dart
@@ -232,8 +232,8 @@ class _EditProjectScreenState extends State<EditProjectScreen> {
         final firstName = sharedPref.getString(StorageKeys.firstname)!;
         final lastName = sharedPref.getString(StorageKeys.lastname)!;
         _formData.piName = "$firstName $lastName";
-        _formData.coPiUserID = userDetails['project']['CoPiUserID'];
-        _formData.studentUserID = userDetails['project']['StudentUserID'];
+        _formData.coPiUserID = userDetails['project']['CoPiUserID'] ?? 0;
+        _formData.studentUserID = userDetails['project']['StudentUserID'] ?? 0;
 
         _formData.piSealLocation = userDetails['project']['CreatorUserSealLocation'];
         String piSealfilePath = _formData.piSealLocation.isNotEmpty
@@ -2511,7 +2511,7 @@ class FormData {
   // String studentId = '';
   // String studentRegNo = '';
   // String studentName = '';
-  int studentUserID = 0;
+  int? studentUserID;
   // String coPiReferencesOfLatestPublications = '';
   // String coPiExperienceInTeaching = '';
   // String coPiExperienceInResearch = '';
@@ -2526,7 +2526,7 @@ class FormData {
   // String coPiAddress = '';
   // String coPiPhone = '';
   // String coPiName = '';
-  int coPiUserID = 0;
+  int? coPiUserID;
   // String piReferencesOfLatestPublications = '';
   // int piExperienceInTeaching = 0;
   // int piExperienceInResearch = 0;
@@ -2621,10 +2621,11 @@ class _CoPiState extends State<_CoPi> {
                       } else if (snapshot.hasError) {
                         return Text('Error: ${snapshot.error}');
                       } else {
-                        User? selectedUser = snapshot.data?.firstWhere(
-                          (user) => user.userId == widget.formData.coPiUserID,
-                          orElse: () => snapshot.data!.first,
-                        );
+                        User? selectedUser = widget.formData.coPiUserID != 0
+                            ? snapshot.data?.firstWhere(
+                                (user) => user.userId == widget.formData.coPiUserID,
+                              )
+                            : null;
                         return FormBuilderDropdown<User>(
                           name: 'co_pi_name',
                           initialValue: selectedUser,
@@ -2634,8 +2635,8 @@ class _CoPiState extends State<_CoPi> {
                             border: OutlineInputBorder(),
                             floatingLabelBehavior: FloatingLabelBehavior.always,
                           ),
-                          validator: FormBuilderValidators.required(),
-                          autovalidateMode: AutovalidateMode.onUserInteraction,
+                          // validator: FormBuilderValidators.required(),
+                          autovalidateMode: AutovalidateMode.disabled,
                           items: snapshot.data!
                               .map((user) => DropdownMenuItem<User>(
                                     value: user,
@@ -2645,7 +2646,7 @@ class _CoPiState extends State<_CoPi> {
                           onChanged: (User? user) {
                             if (user != null) {
                               setState(() {
-                                widget.formData.coPiUserID = user.userId;
+                                widget.formData.coPiUserID = user?.userId;
                               });
                             }
                           },
@@ -2698,10 +2699,11 @@ class _StudentState extends State<_Student> {
                       } else if (snapshot.hasError) {
                         return Text('Error: ${snapshot.error}');
                       } else {
-                        User? selectedUser = snapshot.data?.firstWhere(
-                          (user) => user.userId == widget.formData.studentUserID,
-                          orElse: () => snapshot.data!.first,
-                        );
+                        User? selectedUser = widget.formData.studentUserID != 0
+                            ? snapshot.data?.firstWhere(
+                                (user) => user.userId == widget.formData.studentUserID,
+                              )
+                            : null;
                         return FormBuilderDropdown<User>(
                           name: 'student_name',
                           initialValue: selectedUser,
@@ -2711,8 +2713,8 @@ class _StudentState extends State<_Student> {
                             border: OutlineInputBorder(),
                             floatingLabelBehavior: FloatingLabelBehavior.always,
                           ),
-                          validator: FormBuilderValidators.required(),
-                          autovalidateMode: AutovalidateMode.onUserInteraction,
+                          // validator: FormBuilderValidators.required(),
+                          autovalidateMode: AutovalidateMode.disabled,
                           items: snapshot.data!
                               .map((user) => DropdownMenuItem<User>(
                                     value: user,
@@ -2722,7 +2724,7 @@ class _StudentState extends State<_Student> {
                           onChanged: (User? user) {
                             if (user != null) {
                               setState(() {
-                                widget.formData.studentUserID = user.userId;
+                                widget.formData.studentUserID = user?.userId;
                               });
                             }
                           },
diff --git a/lib/views/screens/user/project_panel/ViewProjectScreen.dart b/lib/views/screens/user/project_panel/ViewProjectScreen.dart
index 32df09f..0c4ef3d 100644
--- a/lib/views/screens/user/project_panel/ViewProjectScreen.dart
+++ b/lib/views/screens/user/project_panel/ViewProjectScreen.dart
@@ -152,8 +152,8 @@ class _ViewProjectScreenState extends State<ViewProjectScreen> {
         _formData.othersRequired = userDetails['project']['OtherRequired'];
         // // Signature
         _formData.piUserID = userDetails['project']['CreatorUserID'];
-        _formData.coPiUserID = userDetails['project']['CoPiUserID'];
-        _formData.studentUserID = userDetails['project']['StudentUserID'];
+        _formData.coPiUserID = userDetails['project']['CoPiUserID'] ?? 0;
+        _formData.studentUserID = userDetails['project']['StudentUserID'] ?? 0;
 
         _formData.piSealLocation = userDetails['project']['CreatorUserSealLocation'];
         String piSealfilePath = _formData.piSealLocation.isNotEmpty
@@ -216,26 +216,36 @@ class _ViewProjectScreenState extends State<ViewProjectScreen> {
         }
 
         // get student user details
-        final studentUserDetails = await ApiService.getSpecificUser(
-          _formData.studentUserID,
-        );
-        if (studentUserDetails['statuscode'] == 401) {
-          // Handle token expiration
-          final dialog = AwesomeDialog(
-            context: context,
-            dialogType: DialogType.error,
-            desc: "Token expired. Please login again.",
-            width: kDialogWidth,
-            btnOkText: 'OK',
-            btnOkOnPress: () {},
+        if (_formData.studentUserID != null && _formData.studentUserID != 0) {
+          final studentUserDetails = await ApiService.getSpecificUser(
+            _formData.studentUserID,
           );
-          dialog.show();
+          if (studentUserDetails['statuscode'] == 401) {
+            // Handle token expiration
+            final dialog = AwesomeDialog(
+              context: context,
+              dialogType: DialogType.error,
+              desc: "Token expired. Please login again.",
+              width: kDialogWidth,
+              btnOkText: 'OK',
+              btnOkOnPress: () {},
+            );
+            dialog.show();
+          } else {
+            _formData.studentName = studentUserDetails['user']['FirstName'] + ' ' + studentUserDetails['user']['LastName'];
+            _formData.studentId = studentUserDetails['user']['StudentID'].toString();
+            _formData.studentRegNo = studentUserDetails['user']['StudentRegNo'] ?? '';
+            _formData.firstEnrollmentSemester = studentUserDetails['user']['FirstEnrollmentSemester'] ?? '';
+            _formData.cgpaUndergraduateLevel = studentUserDetails['user']['UndergraduateCGPALevel'] ?? '';
+          }
+        } else {
+          // Reset student related fields if studentUserID is null or 0
+          _formData.studentName = '';
+          _formData.studentId = '';
+          _formData.studentRegNo = '';
+          _formData.firstEnrollmentSemester = '';
+          _formData.cgpaUndergraduateLevel = '';
         }
-        _formData.studentName = studentUserDetails['user']['FirstName'] + ' ' + studentUserDetails['user']['LastName'];
-        _formData.studentId = studentUserDetails['user']['StudentID'].toString();
-        _formData.studentRegNo = studentUserDetails['user']['StudentRegNo'] ?? '';
-        _formData.firstEnrollmentSemester = studentUserDetails['user']['FirstEnrollmentSemester'] ?? '';
-        _formData.cgpaUndergraduateLevel = studentUserDetails['user']['UndergraduateCGPALevel'] ?? '';
 
         // get PI user details
         final piUserDetails = await ApiService.getSpecificUser(
@@ -275,41 +285,66 @@ class _ViewProjectScreenState extends State<ViewProjectScreen> {
         _formData.piReferencesOfLatestPublications = piUserDetails['user']['ReferencesOfLatestPublications'] ?? '';
 
         // get CO-PI user details
-        final coPiUserDetails = await ApiService.getSpecificUser(
-          _formData.coPiUserID,
-        );
-        if (coPiUserDetails['statuscode'] == 401) {
-          // Handle token expiration
-          final dialog = AwesomeDialog(
-            context: context,
-            dialogType: DialogType.error,
-            desc: "Token expired. Please login again.",
-            width: kDialogWidth,
-            btnOkText: 'OK',
-            btnOkOnPress: () {},
+        if (_formData.coPiUserID != null && _formData.coPiUserID != 0) {
+          final coPiUserDetails = await ApiService.getSpecificUser(
+            _formData.coPiUserID,
           );
-          dialog.show();
+          if (coPiUserDetails['statuscode'] == 401) {
+            // Handle token expiration
+            final dialog = AwesomeDialog(
+              context: context,
+              dialogType: DialogType.error,
+              desc: "Token expired. Please login again.",
+              width: kDialogWidth,
+              btnOkText: 'OK',
+              btnOkOnPress: () {},
+            );
+            dialog.show();
+          } else {
+            _formData.coPiName = coPiUserDetails['user']['FirstName'] + ' ' + coPiUserDetails['user']['LastName'];
+            _formData.coPiPresentAddress = coPiUserDetails['user']['PresentAddress'] ?? '';
+            _formData.coPiPermanentAddress = coPiUserDetails['user']['PermanentAddress'] ?? '';
+            _formData.coPiPositionEnglish = coPiUserDetails['user']['PositionEnglish'] ?? '';
+            _formData.coPiDepartmentName = coPiUserDetails['user']['DepartmentName'] ?? '';
+            _formData.coPiFacultyName = coPiUserDetails['user']['FacultyName'] ?? '';
+            _formData.coPiBasicPay = coPiUserDetails['user']['BasicPay'].toString();
+            _formData.coPiInstituteLocation = coPiUserDetails['user']['InstituteLocation'] ?? '';
+            _formData.coPiInstituteName = coPiUserDetails['user']['InstituteName'] ?? '';
+            _formData.coPiEmail = coPiUserDetails['user']['Email'] ?? '';
+            _formData.coPiPhone = coPiUserDetails['user']['Phone'] ?? '';
+            _formData.coPiSalaryScale = coPiUserDetails['user']['SalaryScale'] ?? '';
+            _formData.coPiHighestAcademicQualification = coPiUserDetails['user']['HighestAcademicQualification'] ?? '';
+            _formData.coPiHighestAcademicQualificationUniversity = coPiUserDetails['user']['HighestAcademicQualificationUniversity'] ?? '';
+            _formData.coPiHighestAcademicQualificationCountry = coPiUserDetails['user']['HighestAcademicQualificationCountry'] ?? '';
+            _formData.coPiHighestAcademicQualificationYear = coPiUserDetails['user']['HighestAcademicQualificationYear'].toString();
+            _formData.coPiAreaOfExpertise = coPiUserDetails['user']['AreaOfExpertise'] ?? '';
+            _formData.coPiExperienceInResearch = coPiUserDetails['user']['ExperienceInResearch'].toString();
+            _formData.coPiExperienceInTeaching = coPiUserDetails['user']['Teaching'].toString();
+            _formData.coPiReferencesOfLatestPublications = coPiUserDetails['user']['ReferencesOfLatestPublications'] ?? '';
+          }
+        } else {
+          // Reset CO-PI related fields if coPiUserID is null or 0
+          _formData.coPiName = '';
+          _formData.coPiPresentAddress = '';
+          _formData.coPiPermanentAddress = '';
+          _formData.coPiPositionEnglish = '';
+          _formData.coPiDepartmentName = '';
+          _formData.coPiFacultyName = '';
+          _formData.coPiBasicPay = '';
+          _formData.coPiInstituteLocation = '';
+          _formData.coPiInstituteName = '';
+          _formData.coPiEmail = '';
+          _formData.coPiPhone = '';
+          _formData.coPiSalaryScale = '';
+          _formData.coPiHighestAcademicQualification = '';
+          _formData.coPiHighestAcademicQualificationUniversity = '';
+          _formData.coPiHighestAcademicQualificationCountry = '';
+          _formData.coPiHighestAcademicQualificationYear = '';
+          _formData.coPiAreaOfExpertise = '';
+          _formData.coPiExperienceInResearch = '';
+          _formData.coPiExperienceInTeaching = '';
+          _formData.coPiReferencesOfLatestPublications = '';
         }
-        _formData.coPiName = coPiUserDetails['user']['FirstName'] + ' ' + coPiUserDetails['user']['LastName'];
-        _formData.coPiPresentAddress = coPiUserDetails['user']['PresentAddress'] ?? '';
-        _formData.coPiPermanentAddress = coPiUserDetails['user']['PermanentAddress'] ?? '';
-        _formData.coPiPositionEnglish = coPiUserDetails['user']['PositionEnglish'] ?? '';
-        _formData.coPiDepartmentName = coPiUserDetails['user']['DepartmentName'] ?? '';
-        _formData.coPiFacultyName = coPiUserDetails['user']['FacultyName'] ?? '';
-        _formData.coPiBasicPay = coPiUserDetails['user']['BasicPay'].toString();
-        _formData.coPiInstituteLocation = coPiUserDetails['user']['InstituteLocation'] ?? '';
-        _formData.coPiInstituteName = coPiUserDetails['user']['InstituteName'] ?? '';
-        _formData.coPiEmail = coPiUserDetails['user']['Email'] ?? '';
-        _formData.coPiPhone = coPiUserDetails['user']['Phone'] ?? '';
-        _formData.coPiSalaryScale = coPiUserDetails['user']['SalaryScale'] ?? '';
-        _formData.coPiHighestAcademicQualification = coPiUserDetails['user']['HighestAcademicQualification'] ?? '';
-        _formData.coPiHighestAcademicQualificationUniversity = coPiUserDetails['user']['HighestAcademicQualificationUniversity'] ?? '';
-        _formData.coPiHighestAcademicQualificationCountry = coPiUserDetails['user']['HighestAcademicQualificationCountry'] ?? '';
-        _formData.coPiHighestAcademicQualificationYear = coPiUserDetails['user']['HighestAcademicQualificationYear'].toString();
-        _formData.coPiAreaOfExpertise = coPiUserDetails['user']['AreaOfExpertise'] ?? '';
-        _formData.coPiExperienceInResearch = coPiUserDetails['user']['ExperienceInResearch'].toString();
-        _formData.coPiExperienceInTeaching = coPiUserDetails['user']['Teaching'].toString();
-        _formData.coPiReferencesOfLatestPublications = coPiUserDetails['user']['ReferencesOfLatestPublications'] ?? '';
       });
     }