Method tag_get_tags_csv() is deprecated. Instead you should use either core_tag_tag::get_item_tags_array() or $OUTPUT->tag_list(core_tag_tag::get_item_tags()). Component is now required when retrieving tag instances.

• line 2331 of /lib/deprecatedlib.php: call to debugging()
• line 177 of /blocks/course_managers/manager.php: call to tag_get_tags_csv()