The error is
"Impossibile caricare il tipo 'System.ValueTuple`2' dall'assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'."

• Stack trace:

at ParseTreeVisualizer.VisualizerData..ctor(Object o, Config config) in C:\projects\antlr4parsetreevisualizer\Shared\Models\VisualizerData.cs:line 192
at ParseTreeVisualizer.ObjectSource.TransferData(Object target, Stream incomingData, Stream outgoingData) in C:\projects\antlr4parsetreevisualizer\Shared\VisualizerDataObjectSource.cs:line 10
at Microsoft.VisualStudio.DebuggerVisualizers.ClrCustomVisualizers.ClrCustomVisualizerDebuggeeHost.TransferData(Object visualizedObject, Byte[] uiSideData)

Visual studio 2017 Enterprise - Version 15.9.17
.Net Framework 4.6.01055
AntlrRuntime DLL: version 4.6.5