Hello,
I tried to upgrade my prestashop shop from 1.5.4.1 to 1.5.5.0. Like for many people, everything went wrong and was fucked up (internet server error 500), crashing everywhere with a nice "FastCGI: failed to read from backend server".
But before doing this disaster, I saved my BDD and all the file on the server. At this time everything was working perfectly.
Problem : I have put back the saved file, removed all table from database, then import the saved database (no problem). I emptied varnia cache from web server. But now I keep getting these fastcgi crash problems ! >.< Some pages work (back office login), then after loging in, boom crash.
So the new versions is broken and the old version is also broken but when I saved it everything was working perfectly !
There, I need big help. Thanks you.
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[Tue Sep 03 08:13:01.461763 2013] [:error] [pid 28939:tid 3549601367808] (104)Connection reset by peer: [client 2.84.29.123:10150] FastCGI: failed to read from backend server [Tue Sep 03 08:13:04.019693 2013] [:error] [pid 28939:tid 3549618153216] (104)Connection reset by peer: [client 2.84.29.123:11140] FastCGI: failed to read from backend server