Encountering VBA Error - Can't find project or library without a way to fix it!

I have now had the same error pop on two non-related .xlxm files. I open the file and a pop up says "Can't find project or library". I go the VBA editor to either turn on the missing library and either its 1) nothing shows as "missing" or 2) the box won't open at all.

I'm not sure if this is an issue with my Excel or if something is happening to my .xlxm files.

Any ideas?