GET variables.less 404 Error

I actually also get a “this stylesheet could not be loaded” in my browser when loading the site without autoptimize, the problem is due to https://boden-myster.de/wp-content/themes/ronneby/inc/news-page-slider/custom.css?ver=1.0.0 which indeed starts off with @import "./_generated/variables.less"; which is empty. I could provide you an hack-ish workaround (a couple of lines of code hooking into autoptimize’s API), but the nest solution would be to fix the root cause (news-page-slider/custome.css) really.

frank