exception is Object serialized to Array. JObject instance expected.
....
Newtonsoft.Json.dll!Newtonsoft.Json.Linq.JObject.FromObject(object o, Newtonsoft.Json.JsonSerializer jsonSerializer) Unknown
> StreamJsonRpc.dll!StreamJsonRpc.JsonMessageFormatter.TokenizeUserData(StreamJsonRpc.Protocol.JsonRpcMessage jsonRpcMessage) Line 314 C#
StreamJsonRpc.dll!StreamJsonRpc.JsonMessageFormatter.Serialize(StreamJsonRpc.Protocol.JsonRpcMessage message) Line 190 C#
StreamJsonRpc.dll!StreamJsonRpc.JsonMessageFormatter.Serialize(System.Buffers.IBufferWriter<byte> contentBuffer, StreamJsonRpc.Protocol.JsonRpcMessage message) Line 135 C#
StreamJsonRpc.dll!StreamJsonRpc.HeaderDelimitedMessageHandler.Write(StreamJsonRpc.Protocol.JsonRpcMessage content, System.Threading.CancellationToken cancellationToken) Line 225 C#
StreamJsonRpc.dll!StreamJsonRpc.PipeMessageHandler.WriteCoreAsync(StreamJsonRpc.Protocol.JsonRpcMessage content, System.Threading.CancellationToken cancellationToken) Line 101 C#
StreamJsonRpc.dll!StreamJsonRpc.MessageHandlerBase.WriteAsync(StreamJsonRpc.Protocol.JsonRpcMessage content, System.Threading.CancellationToken cancellationToken) Line 137 C#
StreamJsonRpc.dll!StreamJsonRpc.JsonRpc.TransmitAsync(StreamJsonRpc.Protocol.JsonRpcMessage message, System.Threading.CancellationToken cancellationToken) Line 1881 C#
StreamJsonRpc.dll!StreamJsonRpc.JsonRpc.InvokeCoreAsync<object>(long? id, string targetName, System.Collections.Generic.IReadOnlyList<object> arguments, System.Threading.CancellationToken cancellationToken, bool isParameterObject) Line 1115 C#
StreamJsonRpc.dll!StreamJsonRpc.JsonRpc.InvokeCoreAsync<object>(long? id, string targetName, System.Collections.Generic.IReadOnlyList<object> arguments, System.Threading.CancellationToken cancellationToken) Line 1005 C#
StreamJsonRpc.dll!StreamJsonRpc.JsonRpc.InvokeWithCancellationAsync<object>(string targetName, System.Collections.Generic.IReadOnlyList<object> arguments, System.Threading.CancellationToken cancellationToken) Line 875 C#
Microsoft.VisualStudio.LanguageServices.dll!Microsoft.VisualStudio.LanguageServices.Remote.JsonRpcEx.InvokeAsync(string targetName, System.Collections.Generic.IReadOnlyList<object> arguments, System.Threading.CancellationToken cancellationToken) Line 62 C#
Microsoft.VisualStudio.LanguageServices.dll!Microsoft.VisualStudio.LanguageServices.Remote.JsonRpcConnection.InvokeAsync(string targetName, System.Collections.Generic.IReadOnlyList<object> arguments, System.Threading.CancellationToken cancellationToken) Line 37 C#
exception is Object serialized to Array. JObject instance expected.
I have dump here (\mlangfs1\public\hechang\jsonRpc)
....