Coding problem: $PAGE->context was not set. You may have forgotten to call require_login() or $PAGE->set_context(). The page may not display correctly as a result
line 493 of /lib/pagelib.php: call to debugging()
line 820 of /lib/pagelib.php: call to moodle_page->magic_get_context()
line 1456 of /lib/weblib.php: call to moodle_page->__get()
line 1223 of /lib/pagelib.php: call to format_string()
line 76 of /mod/forum/user.php: call to moodle_page->set_title()