WARNING : Tried to restore enab ckages multiple times / without performing a backup Lobby created ! Couldn ' t start game session , saved submarine is empty . The submarine file may be corrupted . Object reference not set to an instance of an object . at Barotrauma . Networking . RespawnManager .. ctor ( NetworkMember networkMember , Submarinelnfo shuttlelnfo ) in < DEV >\ Barotrauma \ BarotrauRespawnManager . cs : line 100 at Barotrauma . Networking . GameServer . StartGame ( Submarinelnfo selectedSub , Submarinelnfo selected Shuttle , GameModePreset selectedMode , CampaignSettings settings )+ MoveNext () in < DEV >\ Barotrauma \ BarotraumaServer \ ServerSource \ Networking \ GameServer . cs : line 2324 at Barotrauma . CoroutineManager . PerformCoroutineStep ( CoroutineHandle handle ) in < DEV >\ Barotrauma BarotraumaShared \ SharedSource \ CoroutineManager . cs : lin 214 at Barotrauma . CoroutineManager . IsDone ( CoroutineHandle handle ) in < DEV >( Barotrauma BarotraumaShared SharedSource CoroutineManager . es line 236 e61