Here's what I'm seeing. I get the error everytime I send a chat message.
[Better Chat] [Global] [SWG] Rogue: test
ArgumentNullException: Value cannot be null.
Parameter name: exception
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[TResult].SetException (System.Exception exception) [0x00003] in <47fc8c70fa834cbf8141d7c1a7589125>:0
at System.Runtime.CompilerServices.AsyncValueTaskMethodBuilder`1[TResult].SetException (System.Exception exception) [0x00000] in <47fc8c70fa834cbf8141d7c1a7589125>:0
at ConVar.Chat.sayAs (ConVar.Chat+ChatChannel targetChannel, System.UInt64 userId, System.String username, System.String message, BasePlayer player) [0x008dc] in <a36c4a68bb164d9092a45ce142166cc8>:0
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[TResult].Start[TStateMachine] (TStateMachine& stateMachine) [0x0002c] in <47fc8c70fa834cbf8141d7c1a7589125>:0
at ConVar.Chat.sayAs (ConVar.Chat+ChatChannel targetChannel, System.UInt64 userId, System.String username, System.String message, BasePlayer player) [0x0003d] in <a36c4a68bb164d9092a45ce142166cc8>:0
at ConVar.Chat.sayImpl (ConVar.Chat+ChatChannel targetChannel, ConsoleSystem+Arg arg) [0x00162] in <a36c4a68bb164d9092a45ce142166cc8>:0
at ConVar.Chat.say (ConsoleSystem+Arg arg) [0x00007] in <a36c4a68bb164d9092a45ce142166cc8>:0
at ConsoleGen+<>c.<.cctor>b__2_552 (ConsoleSystem+Arg arg) [0x00000] in <a36c4a68bb164d9092a45ce142166cc8>:0
at ConsoleSystem.Internal (ConsoleSystem+Arg arg) [0x0005b] in <42b592b0fe434ca0bc5afa3d78fcb4b9>:0
UnityEngine.DebugLogHandler:Internal_LogException(Exception, Object)
UnityEngine.DebugLogHandler:LogException(Exception, Object)
UnityEngine.Logger:LogException(Exception, Object)
UnityEngine.Debug:LogException(Exception)
ConsoleSystem:Internal(Arg)
ConsoleSystem:Run(Option, String, Object[])
ConsoleNetwork:OnClientCommand(Message)
ServerMgr:OnNetworkMessage(Message)
Facepunch.Network.Raknet.Server:ProcessRead(NetRead)
Network.BaseNetwork:Cycle()
ServerMgr:Update_Patch0(Object)