InvalidOperationException: Only one write can be pending at a time.
Grpc.Core.Utils.GrpcPreconditions.CheckState (System.Boolean condition, System.String errorMessage) (at T:/src/github/grpc/src/csharp/Grpc.Core.Api/Utils/GrpcPreconditions.cs:101)
Grpc.Core.Internal.AsyncCall`2[TRequest,TResponse].CheckSendPreconditionsClientSide () (at T:/src/github/grpc/src/csharp/Grpc.Core/Internal/AsyncCall.cs:451)
Grpc.Core.Internal.AsyncCall`2[TRequest,TResponse].CheckSendAllowedOrEarlyResult () (at T:/src/github/grpc/src/csharp/Grpc.Core/Internal/AsyncCall.cs:427)
Grpc.Core.Internal.AsyncCallBase`2[TWrite,TRead].SendMessageInternalAsync (TWrite msg, Grpc.Core.WriteFlags writeFlags) (at T:/src/github/grpc/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs:123)
Grpc.Core.Internal.AsyncCall`2[TRequest,TResponse].SendMessageAsync (TRequest msg, Grpc.Core.WriteFlags writeFlags) (at T:/src/github/grpc/src/csharp/Grpc.Core/Internal/AsyncCall.cs:297)
Grpc.Core.Internal.ClientRequestStream`2[TRequest,TResponse].WriteAsync (TRequest message) (at T:/src/github/grpc/src/csharp/Grpc.Core/Internal/ClientRequestStream.cs:38)
FullMetalMonsters.Meta.Shared.OnlineSquadManager+<>c__DisplayClass46_0.<CreateFsm>g__HandleQuitCommand|9 (FullMetalMonsters.Ai.IFsmTransitor tr, FullMetalMonsters.Meta.Shared.OnlineSquadManager+CommandQuitSquad ev) (at Assets/Scripts/Meta/Shared/OnlineSquadManager.cs:332)
FullMetalMonsters.Ai.Fsm+StateDefinition+<>c__DisplayClass9_0`1[TEvent].<On>b__0 (FullMetalMonsters.Ai.IFsmTransitor transition, System.Object ev) (at Assets/Scripts/Ai/Fsm.cs:38)
FullMetalMonsters.Ai.Fsm.Raise (System.Object eventInstance) (at Assets/Scripts/Ai/Fsm.cs:120)
FullMetalMonsters.Meta.Shared.OnlineSquadManager.Quit (System.String newLeaderId) (at Assets/Scripts/Meta/Shared/OnlineSquadManager.cs:84)
FullMetalMonsters.Popups.QuitSquadConfirmPopupViewModel.Confirm () (at Assets/Scripts/Popups/QuitSquadConfirmPopupViewModel.cs:41)
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <d7ac571ca2d04b2f981d0d886fa067cf>:0)
Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <d7ac571ca2d04b2f981d0d886fa067cf>:0)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at <d7ac571ca2d04b2f981d0d886fa067cf>:0)
UnityWeld.Binding.EventBinding+<>c__DisplayClass9_0.<Connect>b__0 () (at C:/DiskD/Work/Unity-Weld-0.8.0/UnityWeld/Binding/EventBinding.cs:64)
UnityWeld.Binding.Internal.UnityEventBinder.EventHandler () (at C:/DiskD/Work/Unity-Weld-0.8.0/UnityWeld/Binding/Internal/UnityEventBinder.cs:83)
UnityEngine.Events.InvokableCall.Invoke () (at C:/buildslave/unity/build/Runtime/Export/UnityEvent.cs:166)
UnityEngine.Events.UnityEvent.Invoke () (at C:/buildslave/unity/build/Runtime/Export/UnityEvent_0.cs:58)
UnityEngine.UI.Button.Press () (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/UI/Core/Button.cs:66)
UnityEngine.UI.Button.OnPointerClick (UnityEngine.EventSystems.PointerEventData eventData) (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/UI/Core/Button.cs:108)
UnityEngine.EventSystems.ExecuteEvents.Execute (UnityEngine.EventSystems.IPointerClickHandler handler, UnityEngine.EventSystems.BaseEventData eventData) (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/EventSystem/ExecuteEvents.cs:50)
UnityEngine.EventSystems.ExecuteEvents.Execute[T] (UnityEngine.GameObject target, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.ExecuteEvents+EventFunction`1[T1] functor) (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/EventSystem/ExecuteEvents.cs:261)
UnityEngine.DebugLogHandler:LogException(Exception, Object)
FullMetalMonsters.Log.LogResponseService:LogException(Exception, Object) (at Assets/Scripts/Core/LogService.cs:72)
UnityEngine.EventSystems.EventSystem:Update()