Debug info: Argument 2 passed to has_capability() must be an instance of context, boolean given, called in /var/www/portal.itas.ca/lib/modinfolib.php on line 998 and defined

Moodle Error:

Stack trace:
line 365 of /lib/setuplib.php: coding_exception thrown
line 348 of /lib/accesslib.php: call to default_error_handler()
line 998 of /lib/modinfolib.php: call to has_capability()
line 980 of /lib/modinfolib.php: call to cm_info->update_user_visible()
line 272 of /lib/modinfolib.php: call to cm_info->obtain_dynamic_data()
line 1104 of /lib/modinfolib.php: call to course_modinfo->__construct()
line 1519 of /lib/datalib.php: call to get_fast_modinfo()
line 3596 of /mod/assignment/lib.php: call to get_all_instances_in_courses()
line 841 of /course/lib.php: call to assignment_print_overview()
line 107 of /blocks/course_overview/block_course_overview.php: call to print_overview()
line 280 of /blocks/moodleblock.class.php: call to block_course_overview->get_content()
line 232 of /blocks/moodleblock.class.php: call to block_base->formatted_contents()
line 926 of /lib/blocklib.php: call to block_base->get_content_for_output()
line 978 of /lib/blocklib.php: call to block_manager->create_block_contents()
line 311 of /lib/blocklib.php: call to block_manager->ensure_content_created()
line 957 of /lib/outputrenderers.php: call to block_manager->get_content_for_region()
line 148 of /my/index.php: call to core_renderer->blocks_for_region()

Apache Log Error:

[Wed Jan 04 17:26:34 2012] [error] [client 70.67.156.234] Default exception handler: Coding error detected, it must be fixed by a programmer: PHP catchable fatal error Debug: Argument 2 passed to has_capability() must be an instance of context, boolean given, called in /var/www/portal.itas.ca/lib/modinfolib.php on line 998 and defined\n* line 365 of /lib/setuplib.php: coding_exception thrown\n* line 348 of /lib/accesslib.php: call to default_error_handler()\n* line 998 of /lib/modinfolib.php: call to has_capability()\n* line 980 of /lib/modinfolib.php: call to cm_info->update_user_visible()\n* line 272 of /lib/modinfolib.php: call to cm_info->obtain_dynamic_data()\n* line 1104 of /lib/modinfolib.php: call to course_modinfo->__construct()\n* line 1519 of /lib/datalib.php: call to get_fast_modinfo()\n* line 3596 of /mod/assignment/lib.php: call to get_all_instances_in_courses()\n* line 841 of /course/lib.php: call to assignment_print_overview()\n* line 107 of /blocks/course_overview/block_course_overview.php: call to print_overview()\n* line 280 of /blocks/moodleblock.class.php: call to block_course_overview->get_content()\n* line 232 of /blocks/moodleblock.class.php: call to block_base->formatted_contents()\n* line 926 of /lib/blocklib.php: call to block_base->get_content_for_output()\n* line 978 of /lib/blocklib.php: call to block_manager->create_block_contents()\n* line 311 of /lib/blocklib.php: call to block_manager->ensure_content_created()\n* line 957 of /lib/outputrenderers.php: call to block_manager->get_content_for_region()\n* line 148 of /my/index.php: call to core_renderer->blocks_for_region()\n, referer: https://portal.itas.ca/course/loginas.php?id=1&user=373&sesskey=i67nc2WiCz
leeb@core:/var/log/apache2$