This page should be using theme learnr which cannot be initialised. Nor can the site theme learnr. Falling back to boost
line 460 of /lib/classes/output/theme_config.php: call to debugging()
line 1847 of /lib/pagelib.php: call to core\output\theme_config::load()
line 761 of /lib/pagelib.php: call to moodle_page->initialise_theme_and_output()
line 1009 of /lib/pagelib.php: call to moodle_page->magic_get_theme()
line 65 of /course/index.php: call to moodle_page->get_renderer()
Inclusion of filters from 'filter/sectionnames/filter.php' using the 'filter_sectionnames' class naming has been deprecated. Please rename your class to \filter_sectionnames\text_filter and move it to 'filter/sectionnames/classes/text_filter.php'. See MDL-82427 for more information.
line 142 of /filter/classes/filter_manager.php: call to debugging()
line 294 of /filter/classes/filter_manager.php: call to core_filters\filter_manager->make_filter_object()
line 1865 of /lib/pagelib.php: call to core_filters\filter_manager->setup_page_for_globally_available_filters()
line 761 of /lib/pagelib.php: call to moodle_page->initialise_theme_and_output()
line 1009 of /lib/pagelib.php: call to moodle_page->magic_get_theme()
line 65 of /course/index.php: call to moodle_page->get_renderer()