6 hours ago, creation-handicap said:I updated the PHP Version now from PHP 7.0 to 7.1, but the error remains. I tried to set PHP Version to 7.2, but then the backend of the shop won't work.
Any help would be appreciated!
PS 1.7.7 is not compatible with PHP 7.0 So you better stick with 7.1.
Did you enable debug mode?
Did you check for PHP errors in the server's error log?
Are you using any special modules? They might be the problem. You might try using Prestools to disable non-Prestashop modules and overrides.