diff --git a/dags/elsevier/repository.py b/dags/elsevier/repository.py
index 44a2fbef..21cc4ecb 100644
--- a/dags/elsevier/repository.py
+++ b/dags/elsevier/repository.py
@@ -5,7 +5,7 @@
 from common.repository import IRepository
 from common.s3_service import S3Service
 from common.utils import find_extension
-
+from common.exceptions import UnknownFileExtension
 
 class ElsevierRepository(IRepository):
     ZIPED_DIR: str = "raw/"
@@ -28,13 +28,16 @@ def find_all(self, filenames_to_process=None):
             if filenames_to_process
             else self.__find_all_extracted_files()
         )
-        for file in filenames:
-            last_part = os.path.basename(file)
-            filename_without_extension = last_part.split(".")[0]
-            if filename_without_extension not in grouped_files:
-                grouped_files[filename_without_extension] = {}
-            extension = find_extension(last_part)
-            grouped_files[filename_without_extension][extension] = file
+        try:
+            for file in filenames:
+                last_part = os.path.basename(file)
+                filename_without_extension = last_part.split(".")[0]
+                if filename_without_extension not in grouped_files:
+                    grouped_files[filename_without_extension] = {}
+                extension = find_extension(last_part)
+                grouped_files[filename_without_extension][extension] = file
+        except (IndexError, UnknownFileExtension):
+            self.logger.error()
         return list(grouped_files.values())
 
     def get_by_id(self, id: str):