[HTTP ERROR 500]

Hello,

I have problem on my Revive Adserver, I moved it to new server, everything works fine but when I try to add new banner under any campaign I am getting HTTP ERROR 500 and page is disabled. Please can you suggest any solution? 

At the top of page sometime I got this message 

Error: File permission errors detected.

 

Thanks in advance for help.

[HTTP ERROR 500 after Add new banner]

Hello, I have problem, we migrate our website and Revive Adserver directory on a new server, everything works fine but when I try to add new banner under any advertiser's campaign I am getting HTTP ERROR 500

 

This page isn’t working

"domain" is currently unable to handle this request.

HTTP ERROR 500

 

May be anyone can suggest any solutions, other pages and functions works fine. 

 

Thanks in advance.