GN-561 Error when viewing a course Anonymous when course dates tab

lms/djangoapps/courseware/courses.py

@@ -477,7 +477,16 @@ def get_course_date_blocks(course, user, request=None, include_access=False,
         VerificationDeadlineDate,
         VerifiedUpgradeDeadlineDate,
     ]
+    if not course.self_paced and certs_api.get_active_web_certificate(course):
+        default_block_classes.insert(0, CertificateAvailableDate)
+
     blocks.extend([cls(course, user) for cls in default_block_classes])
+    if RELATIVE_DATES_FLAG.is_enabled(course.id) and user and user.is_authenticated:
+        blocks.append(CourseExpiredDate(course, user))
+        blocks.extend(get_course_assignment_date_blocks(
+            course, user, request, num_return=num_assignments,
+            include_access=include_access, include_past_dates=include_past_dates,
+        ))
 
     blocks = filter(lambda b: b.is_allowed and b.date and (include_past_dates or b.is_enabled), blocks)
     return sorted(blocks, key=date_block_key_fn)

lms/djangoapps/courseware/tabs.py

@@ -342,6 +342,11 @@ def link_func(course, reverse_func):
         tab_dict['link_func'] = link_func
         super().__init__(tab_dict)
 
+    @classmethod
+    def is_enabled(cls, course, user=None):
+        """Returns true if this tab is enabled."""
+        return RELATIVE_DATES_FLAG.is_enabled(course.id) and super(DatesTab, cls).is_enabled(course, user=user)
+
 
 def get_course_tab_list(user, course):
     """

openedx/features/course_experience/views/course_home.py

@@ -120,9 +120,6 @@ def render_to_fragment(self, request, course_id=None, **kwargs):  # lint-amnesty
         course_key = CourseKey.from_string(course_id)
         course = get_course_with_access(request.user, 'load', course_key)
 
-        # Render the course dates as a fragment
-        dates_fragment = CourseDatesFragmentView().render_to_fragment(request, course_id=course_id, **kwargs)
-
         # Render the full content to enrolled users, as well as to course and global staff.
         # Unenrolled users who are not course or global staff are given only a subset.
         enrollment = CourseEnrollment.get_enrollment(request.user, course_key)
@@ -145,6 +142,7 @@ def render_to_fragment(self, request, course_id=None, **kwargs):  # lint-amnesty
         has_visited_course = None
         resume_course_url = None
         handouts_html = None
+        dates_fragment = None
 
         course_overview = CourseOverview.get_from_id(course.id)
         if user_access['is_enrolled'] or user_access['is_staff']:
@@ -172,6 +170,13 @@ def render_to_fragment(self, request, course_id=None, **kwargs):  # lint-amnesty
                 request.user,
                 course_overview
             )
+
+            next_up_banner_fragment = NextUpBannerFragmentView().render_to_fragment(
+                assignment_title=resume_course_title, resume_course_url=resume_course_url, assignment_duration='10 min'
+            )
+
+            dates_fragment = CourseDatesFragmentView().render_to_fragment(request, course_id=course_id, **kwargs)
+
         elif allow_public_outline or allow_public:
             outline_fragment = CourseOutlineFragmentView().render_to_fragment(
                 request, course_id=course_id, user_is_enrolled=False, **kwargs