Timeout error

[brookny]

After I cannot save and edit new product, not I am getting error like it:

 

(timeout)
A server error occurred while loading the tabs: some tabs could not be loaded.
Please try again by refreshing the page.
If you are still encountering this problem, please check your server logs or contact your hosting provider for assistance.

 

I tried different computers and browsers, nothing do not help.

Please help!!