[FurretX]

Check your character.cfg in the data folder to first see if every boss is inserted correctly.
If that seems right, check your plugins folder to make sure that you have all of the required plugins for all of the bosses.

Make sure to check the scrds console for any errors. Whenever there are errors, a log file will be made inside the logs folder. You can use that to see what went wrong when the server started up.

(Also I have a test server if you need anything tested.)