The error occurs on article pages, but is being amplified by appearance on Special:MediaSearch which may want to do something on the short term.
e.g. https://commons.wikimedia.org/w/index.php?search=Chopin&title=Special:MediaSearch&go=Go&type=audio
at t.<anonymous> https://commons.wikimedia.org/w/load.php?lang=en&modules=ext.tmh.video-js&skin=vector&version=1hxfm:97:172 at https://commons.wikimedia.org/w/load.php?lang=en&modules=ext.tmh.video-js&skin=vector&version=1hxfm:26:272