The match you are trying to join is running an incompatible version of the game. Please try upgrading your game version.
error.

Updating Soulmask Server
- Login to the game panel
- In the Startup tab, make sure Auto Update is enabled
- Press the “Restart” button
Updating Soulmask Server on Linux
Before updating, please take a backup! Saves headache down the line in case anything goes awry.
- Launch or navigate to SteamCMD
login anonymous
app_update 3017300 validate
exit
./steamcmd.sh +force_install_dir /home/Steam/steamapps/common/Soulmask_server +login anonymous +app_update 3017300 validate +quit
Updating Soulmask Server on Windows
- Open command prompt in the SteamCMD folder
- Run
steamcmd.exe +force_install_dir /home/Steam/steamapps/common/Soulmask_server +login anonymous +app_update 3017300 validate +quit
Related Guides
- Join Soulmask Server - Connect after updating
- Change Server Settings - Customize updated server
- Server Backups - Backup before updating
- Palworld Server Updates - Cross-game update process
- Control Panel Overview - Understanding server management