diff --git a/cms/djangoapps/contentstore/utils.py b/cms/djangoapps/contentstore/utils.py
index 0b33e88a2a6..d14944436a7 100644
--- a/cms/djangoapps/contentstore/utils.py
+++ b/cms/djangoapps/contentstore/utils.py
@@ -2234,3 +2234,56 @@ def send_course_update_notification(course_key, content, user):
         audience_filters={},
     )
     COURSE_NOTIFICATION_REQUESTED.send_event(course_notification_data=notification_data)
+
+
+def get_xblock_validation_messages(xblock):
+    """
+    Retrieves validation messages for a given xblock.
+    Args:
+        xblock: The xblock object to validate.
+    Returns:
+        list: A list of validation error messages.
+    """
+    validation_json = xblock.validate().to_json()
+    return validation_json['messages']
+
+
+def get_xblock_render_error(request, xblock):
+    """
+    Checks if there are any rendering errors for a given block and return these.
+    Args:
+        request: WSGI request object
+        xblock: The xblock object to rendering.
+    Returns:
+        str: Error message which happened while rendering of xblock.
+    """
+    from cms.djangoapps.contentstore.views.preview import _load_preview_block
+    from xmodule.studio_editable import has_author_view
+    from xmodule.x_module import AUTHOR_VIEW, STUDENT_VIEW
+
+    def get_xblock_render_context(request, block):
+        """
+        Return a dict of the data needs for render of each block.
+        """
+        can_edit = has_studio_write_access(request.user, block.usage_key.course_key)
+
+        return {
+            "is_unit_page": False,
+            "can_edit": can_edit,
+            "root_xblock": xblock,
+            "reorderable_items": set(),
+            "paging": None,
+            "force_render": None,
+            "item_url": "/container/{block.location}",
+            "tags_count_map": {},
+        }
+
+    try:
+        block = _load_preview_block(request, xblock)
+        preview_view = AUTHOR_VIEW if has_author_view(block) else STUDENT_VIEW
+        render_context = get_xblock_render_context(request, block)
+        block.render(preview_view, render_context)
+    except Exception as exc:  # pylint: disable=broad-except
+        return str(exc)
+
+    return ""
diff --git a/lms/djangoapps/course_home_api/outline/tests/test_view.py b/lms/djangoapps/course_home_api/outline/tests/test_view.py
index 797cf4cca44..4f40d9a8019 100644
--- a/lms/djangoapps/course_home_api/outline/tests/test_view.py
+++ b/lms/djangoapps/course_home_api/outline/tests/test_view.py
@@ -467,7 +467,7 @@ def __init__(self, *args, **kwargs):
 
     def setUp(self):
         super().setUp()
-        self.url = reverse('course-home:course-sidebar-blocks', args=[self.course.id])
+        self.url = reverse('course-home:course-navigation', args=[self.course.id])
 
     def update_course_and_overview(self):
         """
@@ -573,7 +573,7 @@ def test_get_unknown_course(self):
         """
         Test that the API returns a 404 when the course is not found.
         """
-        url = reverse('course-home:course-sidebar-blocks', args=['course-v1:unknown+course+2T2020'])
+        url = reverse('course-home:course-navigation', args=['course-v1:unknown+course+2T2020'])
         response = self.client.get(url)
         assert response.status_code == 404
 
@@ -624,7 +624,7 @@ def test_proctored_exam(self, mock_summary):
             'suggested_icon': 'fa-foo-bar',
         }
 
-        url = reverse('course-home:course-sidebar-blocks', args=[course.id])
+        url = reverse('course-home:course-navigation', args=[course.id])
         response = self.client.get(url)
         assert response.status_code == 200
 
@@ -715,7 +715,7 @@ def test_empty_blocks_complete(self):
         """
         self.add_blocks_to_course()
         CourseEnrollment.enroll(self.user, self.course.id)
-        url = reverse('course-home:course-sidebar-blocks', args=[self.course.id])
+        url = reverse('course-home:course-navigation', args=[self.course.id])
         response = self.client.get(url)
         assert response.status_code == 200
 
@@ -731,7 +731,7 @@ def test_blocks_complete_with_problem(self, problem_complete):
         CourseEnrollment.enroll(self.user, self.course.id)
         self.create_completion(problem, int(problem_complete))
 
-        response = self.client.get(reverse('course-home:course-sidebar-blocks', args=[self.course.id]))
+        response = self.client.get(reverse('course-home:course-navigation', args=[self.course.id]))
 
         sequence_data = response.data['blocks'][str(self.sequential.location)]
         vertical_data = response.data['blocks'][str(self.vertical.location)]
@@ -750,7 +750,7 @@ def test_blocks_completion_stat(self):
         CourseEnrollment.enroll(self.user, self.course.id)
         self.create_completion(completed_problem, 1)
         self.create_completion(uncompleted_problem, 0)
-        response = self.client.get(reverse('course-home:course-sidebar-blocks', args=[self.course.id]))
+        response = self.client.get(reverse('course-home:course-navigation', args=[self.course.id]))
 
         expected_sequence_completion_stat = {
             'completion': 0,
@@ -779,7 +779,7 @@ def test_blocks_completion_stat_all_problem_completed(self):
         CourseEnrollment.enroll(self.user, self.course.id)
         self.create_completion(problem1, 1)
         self.create_completion(problem2, 1)
-        response = self.client.get(reverse('course-home:course-sidebar-blocks', args=[self.course.id]))
+        response = self.client.get(reverse('course-home:course-navigation', args=[self.course.id]))
 
         expected_sequence_completion_stat = {
             'completion': 1,