Big error

Hello

I need urgent help.I have this error on my site:

Warning! Cannot evaluate Menu Cache.
Warning: Cannot modify header information - headers already sent by (output started at /home/areavis/public_html/inc/classes/BxDolMenu.php:65) in /home/areavis/public_html/inc/design.inc.php on line 133

I can not log in as admin, users can not log on. Do not run photos, music, movies ..Please help

I've tried even to clear the cache, but it did not help.

Make sure the folder cache has 777 permission. If you don't have admin access, delete all files under the folder "cache"(not .htaccess). Dolphin will rebuild all these files again.

Thanks for reply and help. I try to delete all files from cache but it not helped.

Fortunately, the backup has helped and now everything works fine.

Best Regards,

Lucas

Unfortunately, the problem reappeared. Does anyone know why this happens?