Merge pull request #133 from Code-Institute-Org/fix_possible_activitylog_bug

Fix for possible student activity bug caused by deployments of differ…

Author: ray-codeinstitute

lms/djangoapps/ci_program/models.py

@@ -296,7 +296,7 @@ def _find_section_unit(self, module_tree, activity_log, xblock_id):
         latest_course_id = latest_course_key.html_id().split(':')[1]
         block_id = activity_log[0].module_state_key.block_id
         course_xblock = self._find_course(latest_course_id, module_tree)
-        for section in course_xblock['sections']:
+        for section in course_xblock.get('sections') or []:
             if xblock_id == section['block_id']:
                 if section['units']:
                     return section['block_id'], section['units'][0]['block_id']