Players can not connect server with RED warning. Is this plugin's problem?

Some players will disconnect from the server as soon as they enter the world, accompanied by a RED warnings. Is this due to a plugin? Here is what I saw in server console.

*.*.*.*:12051/76561############/xq joined [windows/76561############]
xq[76561############] has spawned
*.*.*.*:12051/76561############/xq disconnecting: Exception (cs:101309): ArgumentNullException: Value cannot be null. Parameter name: source System.Linq.Enumerable.Select[TSource,TResult] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] selector) (at <00000000000000000000000000000000>:0) Rust.Platform.Steam.SteamPlatform.GetItemDefinitionsWithPrices () (at <00000000000000000000000000000000>:0) System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) (at <00000000000000000000000000000000>:0) System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run () (at <00000000000000000000000000000000>:0) System.Threading.Tasks.AwaitTaskContinuation.RunCallback (System.Threading.ContextCallback callback, System.Object state, System.Threading.Tasks.Task& currentTask) (at <00000000000000000000000000000000>:0) System.Threading.Tasks.SynchronizationContextAwaitTaskContinuation.Run (System.Threading.Tasks.Task ignored, System.Boolean canInlineContinuationTask) (at <00000000000000000000000000000000>:0) System.Threading.Tasks.Task.FinishContinuations () (at <00000000000000000000000000000000>:0) System.Threading.Tasks.Task`1[TResult].TrySetResult (TResult result) (at <00000000000000000000000000000000>:0) System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[TResult].SetResult (TResult result) (at <00000000000000000000000000000000>:0) Steamworks.SteamInventory.GetDefinitionsWithPricesAsync () (at <00000000000000000000000000000000>:0) System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) (at <00000000000000000000000000000000>:0) System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run () (at <00000000000000000000000000000000>:0) Steamworks.Dispatch.ProcessCallback (Steamworks.Dispatch+CallbackMsg_t msg, System.Boolean isServer) (at <00000000000000000000000000000000>:0) Steamworks.Dispatch.Frame (Steamworks.Data.HSteamPipe pipe) (at <00000000000000000000000000000000>:0) --- End of stack trace from previous location where exception was thrown --- RepairBenchPanel.%ea5a06b4b14a7ce50decc6cd0e88c5c82ac82cda () (at <00000000000000000000000000000000>:0) System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) (at <00000000000000000000000000000000>:0) System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run () (at <00000000000000000000000000000000>:0) System.Threading.Tasks.AwaitTaskContinuation.RunCallback (System.Threading.ContextCallback callback, System.Object state, System.Threading.Tasks.Task& currentTask) (at <00000000000000000000000000000000>:0) System.Threading.Tasks.SynchronizationContextAwaitTaskContinuation.Run (System.Threading.Tasks.Task ignored, System.Boolean canInlineContinuationTask) (at <00000000000000000000000000000000>:0) System.Threading.Tasks.Task.FinishContinuations () (at <00000000000000000000000000000000>:0) System.Threading.Tasks.Task.Finish (System.Boolean bUserDelegateExecuted) (at <00000000000000000000000000000000>:0) System.Threading.Tasks.Task.TrySetException (System.Object exceptionObject) (at <00000000000000000000000000000000>:0) System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[TResult].SetException (System.Exception exception) (at <00000000000000000000000000000000>:0) Rust.Platform.Steam.SteamPlatform.GetItemDefinitionsWithPrices () (at <00000000000000000000000000000000>:0) System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) (at <00000000000000000000000000000000>:0) System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run () (at <000000000[BoxLooters] Saved Boxlooters data
[Economics] Saving balances for players...

Is game up to date and oxide?