Invalid course module ID

More information about this error

Debug info:
Error code: invalidcoursemodule
Stack trace:
  • line 236 of /lib/modinfolib.php: moodle_exception thrown
  • line 3094 of /lib/moodlelib.php: call to course_modinfo->get_cm()
  • line 65 of /mod/forum/view.php: call to require_course_login()