Solve "No space left on device" on Project Zomboid server

The "No space left on device" error on a Project Zomboid server is quite common. To solve it in no time, you will need to follow these steps :

1. Navigate to the "Files" page
2. Follow those folders : ".cache" => "Server"
3. Find the "servertest.ini" file and click on it
4. Find the line where is written : BackupsOnStart=true
5. Change it to : BackupsOnStart=false
6. Click save and restart your server

The error should now be resolved and you should be able to join your Project Zomboid server without any problem.