Help: Server issue

What version are you trying to migrate the save from and to which?

Could you send the savegame to [email protected]? Simply upload it to any service we can download it without registration.

The log you are getting notes that the server tries to load an existing savegame and migrate it, which fails. You may want to delete that save if you are trying to create a new one. If you are starting the server executable manually, just remove the Game.eco and Game.db in the storage folder of the server.