Hi, I'm softlab on Johnny, my site is infopar.heliohost.org/webCat. I have a problem when I try to load the site: very often I get this message: Proxy Error The proxy server received an invalid response from an upstream server. The proxy server could not handle the request GET /webCat/. Reason: Error reading from remote server Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request. If I try to reload the site, after several attempts finally the site loads; but, every button I click on the site, the same problem happens, and only after several other attemps I succeed. And so on. In the error log in my cPanel there is no more information, only a reference to a 404 error as said in the error message. Can you help me? Thank you