Debug info:
Error code: unknowncategory
Error code: unknowncategory
Stack trace:
- line 1876 of /lib/pagelib.php: moodle_exception thrown
- line 1269 of /lib/pagelib.php: call to moodle_page->load_category()
- line 34 of /course/index.php: call to moodle_page->set_category_by_id()