I have figured out that Jupiter X is conflicting with “The Event Calendar”. When I disable the calendar everything works/loads as it should.
The theme generates these two files but when you do a cache flush/force reload, the following files come back as a 404 and the site loads broken.
After you click around the site for a bit, the files will work or generate so the issue is intermittent in that it sort of fixes itself.
Does anyone have any thoughts on this conflict that is happening? At this time both JupiterX and The Event Calendar support teams say this is out of scope.