I have upgrade to 3.5 and upgraded flexpage to the latest, but now I am experiencing the below error when opening associated courses
Exception - Argument 1 passed to course_format_flexpage_model_cache::is_page_available() must be an instance of course_format_flexpage_model_page, null given, called in [dirroot]\course\format\flexpage\locallib.php on line 88
Exception - Argument 1 passed to course_format_flexpage_model_cache::get_page_parents() must be an instance of course_format_flexpage_model_page, null given, called in [dirroot]\course\format\flexpage\lib.php on line 52