Server Exception: Player Update
AssertionException: connection != null
Assertion failure. Value was Null
Expected: Value was not Null
  at UnityEngine.Assertions.Assert.Fail (System.String message, System.String userMessage) [0x00043] in <5f55adde392a4f559fa097c2225879c0>:0 
  at UnityEngine.Assertions.Assert.IsNotNull[T] (T value, System.String message) [0x0004e] in <5f55adde392a4f559fa097c2225879c0>:0 
  at Network.BaseNetwork.EnqueueWrite (Network.NetWrite write) [0x00030] in <d6d2f2ca61f942a2a418cdf5352584fa>:0 
  at Network.NetWrite.Send (Network.SendInfo info) [0x0005d] in <d6d2f2ca61f942a2a418cdf5352584fa>:0 
  at (wrapper remoting-invoke-with-check) Network.NetWrite.Send(Network.SendInfo)
  at BaseEntity.ClientRPCSend (Network.NetWrite write, Network.SendInfo sendInfo) [0x00000] in <cf3b5cb28c9f48b1ad7ad9321d5cdbaa>:0 
  at BaseEntity.ClientRPC[T1] (RpcTarget target, T1 arg1) [0x00033] in <cf3b5cb28c9f48b1ad7ad9321d5cdbaa>:0 
  at PlayerMetabolism.SendChangesToClient () [0x0002d] in <cf3b5cb28c9f48b1ad7ad9321d5cdbaa>:0 
  at PlayerMetabolism.ServerUpdate (BaseCombatEntity ownerEntity, System.Single delta) [0x0001b] in <cf3b5cb28c9f48b1ad7ad9321d5cdbaa>:0 
  at BasePlayer.ConnectedPlayerUpdate (System.Single deltaTime) [0x00096] in <cf3b5cb28c9f48b1ad7ad9321d5cdbaa>:0 
  at BasePlayer.ServerUpdate (System.Single deltaTime) [0x0020b] in <cf3b5cb28c9f48b1ad7ad9321d5cdbaa>:0 
  at BasePlayer.ServerCycle (System.Single deltaTime) [0x00087] in <cf3b5cb28c9f48b1ad7ad9321d5cdbaa>:0 
  at (wrapper dynamic-method) ServerMgr.Update_Patch0(object)
UnityEngine.DebugLogHandler:Internal_LogException(Exception, Object)
UnityEngine.DebugLogHandler:LogException(Exception, Object)
UnityEngine.Logger:LogException(Exception, Object)
UnityEngine.Debug:LogException(Exception, Object)
ServerMgr:Update_Patch0(Object)​

The server occasionally experiences this error, and then the server crashes directly! Can someone help me?

Firstly, it should be noted that the server is genuine. After conducting multiple studies, I have found that a real teamID player who kills an NPC will be kicked out of the server. If the player receives an error message "Disconnect: RPC Error in OnProjectileAttack", the server's console will display the following error message:
Server Exception: Player Update
AssertionException: connection= Null
Assertion failure Value was null
Expected: Value was not null

Why did you open 2 threads.

mee too

(20:37:41) | NullReferenceException: Object reference not set to an instance of an object (20:37:41) | Server Exception: Player Update

Killeroox

mee too

(20:37:41) | NullReferenceException: Object reference not set to an instance of an object (20:37:41) | Server Exception: Player Update

Under what circumstances did you encounter this problem? For example, when the server starts, it is still frozen.

Killeroox

mee too

(20:37:41) | NullReferenceException: Object reference not set to an instance of an object (20:37:41) | Server Exception: Player Update

There was a client update to resolve this.