Problem with Nextcloud installation

Hi Nextcloud community,

I have a problem installing Nextcloud. I’m trying to install Nextcloud via files because I want to run Nextcloud on the same server as my web server for a few websites.

So now I’m trying to install Directadmin via the files on the web hosting panel.
Now I run into the problem that when I install Nextcloud via MySQL I get an unclear error:

"Internal Server Error

The server was unable to process your request.
Send the technical details pictured below to the server administrator when this happens again.
More details in the server logging,"

When I install Nextcloud via SQLite there is no issue, apart from the fact that you don’t want to use SQlite for daily use.
Below is the complete log from /data/nextcloud.log.

https://hastebin.com/dijepezava.json