Fatal Error! Failed to setup temp directory /tmp/.webmin : No such file or directory

Webmin
1
SYSTEM INFORMATION
OS type and version Ubuntu 22.04
Webmin version Latest

I created a new domain and it worked without problem. When I logged in next time I got this
Fatal Error!
Failed to setup temp directory /tmp/.webmin : No such file or directory

When I reloaded the browser I got this
Fatal Error!

Failed to open /etc/webmin/miniserv.conf for writing : No such file or directory

All other domains are working normal.
What can be wrong and what can be done

2

Sounds like you’re running out of disk space, or some parts of your filesystem are otherwise unwritable.

3

Go to Edit Virtual Server for this domain and check if there is any error/red text about the server quota if the problem is not there try checking Error Logs.