I got some PHP 5.6.24 problems with my Wordpress installation. Thus, I decided to upgrade my PHP version to 7.0.10 which worked fine by the way, I guess. I removed (purged) all php5 settings and php7 was active by default. After that, I have tried to login in the admin panel and got the message that mcrypt is not working. After googling, I found out that php7 ist not supported to host i-MSCP. Thus, I rolled everything back. After that, the backend and frontend still did not work, thus I decided to run the installer again.
The installer breaks at
setupUpdateDatabase: ERROR A downgrade attempt has been detected. Downgrade is unsupported.
But I didn't touch any mysql things, I didnot down- or upgrade mysql, it's still on 5.7.
How can I fix this issue?