I get this text when trying to join my server any way to resolve ?

NullReferenceException: Object reference not set to an instance of an object
at ServerMgr.JoinGame (Network.Connection connection) [0x0004f] in <e86ab4ffe0b94d3ba7333e9531326031>:0
at ConnectionQueue.JoinGame (Network.Connection connection) [0x00037] in <e86ab4ffe0b94d3ba7333e9531326031>:0
at ConnectionQueue.Join (Network.Connection connection) [0x00024] in <e86ab4ffe0b94d3ba7333e9531326031>:0
at ConnectionAuth.Approve (Network.Connection connection) [0x0000c] in <e86ab4ffe0b94d3ba7333e9531326031>:0
at ConnectionAuth+<AuthorisationRoutine>d__6.MoveNext () [0x0019c] in <e86ab4ffe0b94d3ba7333e9531326031>:0
at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00026] in <935634f5cc14479dbaa30641d55600a9>:0

Kind regards

Is it just you or others aswell

if you need help with it, don't hesitate to dm me

Most probable reason would be you have set server.level to something erroneous. It can only be "Procedural Map", or just don't set it at all and let it be default.

Found out it was a error in the server.level 

cralendo

Found out it was a error in the server.level 

Can you mark this as solved please.