[Solved]Error Performance Subtab Backoffice

[nikosspeed]

Hello.When i try to load the performance subtab on backoffice,i receive this message server error 500 (pic).I have two screenshots,one as i see normal and one after turn true the problem report.How can fix this?

Thanks in advance!

 

Edited December 6, 2015 by nikosspeed (see edit history)

[nikosspeed]

After tried many solutions from the internet and prestashop forums and github also,nothing seemed to work....But the solution was so simple from the begining:i just uploaded the original Cache folder of my theme to the server and everything was back to normal!!!