Error: Invalid argument provided to upgrade MDL element.

Hi there! I'm writing to let you know, that there are a significant amount of errors being logged from this script coming from diff pages and edit URLs. Is this script meant to run on these URLs?

Example URLS include:

Stack trace:

at a https://redwarn.toolforge.org/cdn/js/mdl.js:8:2395 at register https://en.wikipedia.org/w/index.php?title=User:RedWarn/.js&action=raw&ctype=text/javascript:381:30 at loadIcons/< https://en.wikipedia.org/w/index.php?title=User:RedWarn/.js&action=raw&ctype=text/javascript:2843:24

(this has also been posted to talk page)