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

• line 713 of /lib/outputlib.php: call to debugging()
• line 1552 of /lib/pagelib.php: call to theme_config::load()
• line 1949 of /lib/setuplib.php: call to moodle_page->initialise_theme_and_output()
• line 62 of /course/info.php: call to bootstrap_renderer->__call()