This page should be using theme adaptable which cannot be initialised. Nor can the site theme adaptable. Falling back to boost

• line 725 of \lib\outputlib.php: call to debugging()
• line 1705 of \lib\pagelib.php: call to theme_config::load()
• line 751 of \lib\pagelib.php: call to moodle_page->initialise_theme_and_output()
• line 1006 of \lib\pagelib.php: call to moodle_page->magic_get_theme()
• line 69 of \course\search.php: call to moodle_page->get_renderer()