I got this error after upgrading the clients PHP version from 5.4 to 5.6 on Godaddy shared hosting. I couldn’t get back into the site after that. I would just get the following error on the front and back end.
Error displaying the error page: The apc Cache Storage is not supported on this platform.: The apc Cache Storage is not supported on this platform.
This article helped me get the site working again: http://stackoverflow.com/questions/38348225/an-error-has-occurred-0-the-file-cache-storage-is-not-supported-on-this-platfor
In the config file I deleted out “apc” in the cache handler. FTP’ed the configuration file back up the site and working again.
I hope this helps someone else out there….