Upgrade: the student is asked to bump Moodle version

Cache definitions reparsed causing cache reset in order to locate definition. You should bump the version number to ensure definitions are reprocessed.
line 409 of /cache/classes/factory.php: call to debugging()
line 181 of /cache/classes/factory.php: call to cache_factory->create_definition()
line 169 of /cache/classes/loaders.php: call to cache_factory->create_cache_from_definition()
line 687 of /repository/lib.php: call to cache::make()
line 964 of /repository/lib.php: call to repository::get_types()
line 2211 of /lib/navigationlib.php: call to repository::get_editable_types()
line 1240 of /lib/navigationlib.php: call to global_navigation->load_for_user()
line 2936 of /lib/navigationlib.php: call to global_navigation->initialise()
line 766 of /lib/pagelib.php: call to navbar->has_items()
line 4 of /theme/base/layout/general.php: call to moodle_page->has_navbar()
line 847 of /lib/outputrenderers.php: call to include()
line 777 of /lib/outputrenderers.php: call to core_renderer->render_page_layout()
line 240 of /course/view.php: call to core_renderer->header()
String does not exist. Please check your string definition for dockblock/block
line 11400 of /lib/moodlelib.php: call to debugging()
line 1088 of /lib/outputrequirementslib.php: call to lang_string->__construct()
line 767 of /lib/outputrequirementslib.php: call to page_requirements_manager->string_for_js()
line 248 of /lib/outputrequirementslib.php: call to page_requirements_manager->js_module()
line 600 of /lib/pagelib.php: call to page_requirements_manager->__construct()
line 717 of /lib/pagelib.php: call to moodle_page->magic_get_requires()
line 202 of /blocks/navigation/block_navigation.php: call to moodle_page->__get()
line 292 of /blocks/moodleblock.class.php: call to block_navigation->get_content()
line 238 of /blocks/moodleblock.class.php: call to block_base->formatted_contents()
line 951 of /lib/blocklib.php: call to block_base->get_content_for_output()
line 1003 of /lib/blocklib.php: call to block_manager->create_block_contents()
line 353 of /lib/blocklib.php: call to block_manager->ensure_content_created()
line 6 of /theme/base/layout/general.php: call to block_manager->region_has_content()
line 847 of /lib/outputrenderers.php: call to include()
line 777 of /lib/outputrenderers.php: call to core_renderer->render_page_layout()
line 240 of /course/view.php: call to core_renderer->header()
String does not exist. Please check your string definition for undockblock/block
line 11400 of /lib/moodlelib.php: call to debugging()
line 1088 of /lib/outputrequirementslib.php: call to lang_string->__construct()
line 767 of /lib/outputrequirementslib.php: call to page_requirements_manager->string_for_js()
line 248 of /lib/outputrequirementslib.php: call to page_requirements_manager->js_module()
line 600 of /lib/pagelib.php: call to page_requirements_manager->__construct()
line 717 of /lib/pagelib.php: call to moodle_page->magic_get_requires()
line 202 of /blocks/navigation/block_navigation.php: call to moodle_page->__get()
line 292 of /blocks/moodleblock.class.php: call to block_navigation->get_content()
line 238 of /blocks/moodleblock.class.php: call to block_base->formatted_contents()
line 951 of /lib/blocklib.php: call to block_base->get_content_for_output()
line 1003 of /lib/blocklib.php: call to block_manager->create_block_contents()
line 353 of /lib/blocklib.php: call to block_manager->ensure_content_created()
line 6 of /theme/base/layout/general.php: call to block_manager->region_has_content()
line 847 of /lib/outputrenderers.php: call to include()
line 777 of /lib/outputrenderers.php: call to core_renderer->render_page_layout()
line 240 of /course/view.php: call to core_renderer->header()
String does not exist. Please check your string definition for loadinghelp/moodle
line 11400 of /lib/moodlelib.php: call to debugging()
line 1088 of /lib/outputrequirementslib.php: call to lang_string->__construct()
line 1124 of /lib/outputrequirementslib.php: call to page_requirements_manager->string_for_js()
line 375 of /lib/outputrenderers.php: call to page_requirements_manager->strings_for_js()
line 51 of /theme/base/layout/general.php: call to core_renderer->standard_head_html()
line 847 of /lib/outputrenderers.php: call to include()
line 777 of /lib/outputrenderers.php: call to core_renderer->render_page_layout()
line 240 of /course/view.php: call to core_renderer->header()