Please fill in all the blanks Database

I need to ask for help because I don’t know what I’m doing wrong.
A long time ago I set up two instances of shopware to learn this tool.

However, one of the instances I deleted and wanted to reinstall. However I get an error when entering data into the database

„Please fill in all the blanks.“

To be sure, I have already created a new database with a new user, etc.

Where could be the error?


By trial and error I found the problem

/var/lib/session must be chmod 1777