ws420 commented on issue #1681: Uncacheable content, preventing rewriting of image URL: https://github.com/apache/incubator-pagespeed-ngx/issues/1681#issuecomment-594912591 After hours of searching, I think we finally fixed the double cache-control headers.  However, it broke the website again and all resources are returning 404 errors  The errors in the debug mode are still 4xx. We had to disable PageSpeed temporarily because it broke the entire website. I have also found a workaround to force the debug mode on the homepage. For some unknown reason it seems the plus sign (+) is being urlencoded to %20. This URL will trigger the debug mode on the homepage: https://www.weedstreet420.com/?PageSpeedFilters=%2Bdebug The solution is to use the urlencoded version of the plus (+) character, which is %2B
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