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Okay, this is getting more and more interesting. When I get an error message that I caused myself, I get the error page in production mode. When I then switch it to development mode, I do see the relevant error log. When I then solve this problem, it shows that database error again. If I then switch it back to production mode, it runs again.

All I can understand from the above description is that there is something wrong with you.
Since I cannot see your screen, I have no idea what you actually did and what error you encountered.

You might get more help if you describe in detail what exactly you did and what the exact error message you got.

The first error message was that "Table 'dwerggeiten.settings' doesn't exist", so I think you need to create the table.

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