[Bug]: no server running on /tmp/tmux-1001/atsserver-5aa01cbc

### User story

Server can't start with tmux need fix

### Game

American Truck Simulator & Euro Truck Simulator 2

### Linux distro

Debian 12

### Command

command: start, command: restart

### Further information

i've this error and i've reinstalled my Server completly with a clean Debian 12 minimal installation. before American Truck Simulator and Euro Truck Simulator 2 has become this Update all works fine with LinuxGSM. But now i got a tmux error "no server running on /tmp/tmux-1001/atsserver-5aa01cbc" .. this is a clean Debian 12 installation and i've installed some stuff clean. i start linuxgsm (./atsserver start) everytime as user and not as root. Since this update the Server can't start with this tmux error

I've reinstalled tmux and i've reinstalled the completly server (Debian 12 minimal)

### Relevant log output

```shell
./atsserver start
[ .... ] Starting atsserver: ATS-Serverno server running on /tmp/tmux-1001/atsserver-5aa01cbc
[ FAIL ] Starting atsserver: Unable to start ATS-Server

./atsserver restart
[ INFO ] Stopping atsserver: ATS-Server is already stopped
[ .... ] Starting atsserver: ATS-Serverno server running on /tmp/tmux-1001/atsserver-5aa01cbc
[ FAIL ] Starting atsserver: Unable to start ATS-Server
```

### Steps to reproduce

1. install atsserver with ./atsserver install
2. start the server with ./atsserver start