DB_ERROR_1 after reinstall

Hello there,
I tried to reinstall dolibarr on an debian test-server and I guess I succeeded partly.
The install steps themselves did go by smoothly and the previous MariaDB was detected without a problem.
The site is displayed and on first glance it works fine, but got some strange Errors when a list of something is involved (projects, thirdparty, user, etc.). Here some examples:
From the start page


From the third-parties list view

From creating a new invoice

Generally I don’t know why it says it has no permission. I followed the tutorials for installation and even tried giving everything in the dolibarr folder root access.
Don’t know if I missed something or not.

Hope someone can help out.

Hello,

MariaDB can’t create new files on the /tmp/ folder.
But without knowing your operating system, I can’t go further

Our OS is Linux running an Apache 2.4 server.
We have 2 other servers with the same specs. Dolibarr works on those other servers fine as well and does not throw such errors.
I don’t know how a reinstall could make something like this happen or how to fix it. :confused:

You can google it : exception - MySQL: Can't create/write to file '/tmp/#sql_3c6_0.MYI' (Errcode: 2) - What does it even mean? - Stack Overflow