Error in all published storyline file

Hi

I am receiving this error message in the Dev tools console for all my publishe courses

DevTools failed to load source map: Could not parse content for https://ocn.eportfolio.org.uk/AssessmentAPs/S2_E3_AP3/html5/lib/stylesheets/desktop.min.css.map: Unexpected token '<', "<!DOCTYPE "... is not valid JSON