EventTracker.cs error

[GeorgeS2019]

Area2D.tscn with the provided Area2D.cs script

EventTracker.cs:33

[gd_scene load_steps=5 format=2]

[ext_resource path="res://icon.png" type="Texture" id=7]
[ext_resource path="res://Scenes/Area2D.cs" type="Script" id=8]

[sub_resource type="RectangleShape2D" id=1]
extents = Vector2( 52.9719, 49.3549 )

[sub_resource type="RectangleShape2D" id=2]
extents = Vector2( 32.0126, 32.0312 )

[node name="Control" type="Control"]
anchor_right = 1.0
anchor_bottom = 1.0
__meta__ = {
"_edit_use_anchors_": false
}

[node name="Area2D" type="Area2D" parent="."]
position = Vector2( 139.6, 497.83 )
script = ExtResource( 8 )
__meta__ = {
"_edit_group_": true
}

[node name="CollisionShape2D" type="CollisionShape2D" parent="Area2D"]
shape = SubResource( 1 )

[node name="RigidBody2D" type="RigidBody2D" parent="."]
position = Vector2( 142.212, 341.815 )
__meta__ = {
"_edit_group_": true
}

[node name="Sprite" type="Sprite" parent="RigidBody2D"]
texture = ExtResource( 7 )

[node name="CollisionShape2D" type="CollisionShape2D" parent="RigidBody2D"]
shape = SubResource( 2 )

E 0:00:04.394   System.ValueTuple`4[System.Int32,Godot.Node,System.Int32,System.Int32] GodotRx.Internal.EventTracker`4[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[Godot.Node, GodotSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Cast(System.Object ): System.InvalidCastException: Specified cast is not valid.
  <C++ Error>   Unhandled exception
  <C++ Source>  GodotRx\addons\godotrx\Internal\EventTracker.cs:74 @ System.ValueTuple`4[System.Int32,Godot.Node,System.Int32,System.Int32] GodotRx.Internal.EventTracker`4[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[Godot.Node, GodotSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Cast(System.Object )()
  <Stack Trace> EventTracker.cs:74 @ System.ValueTuple`4[System.Int32,Godot.Node,System.Int32,System.Int32] GodotRx.Internal.EventTracker`4[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[Godot.Node, GodotSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Cast(System.Object )()
                :0 @ ()
                Select.cs:39 @ void System.Reactive.Linq.ObservableImpl.Select`2+Selector+_[[System.Object, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.ValueTuple`4[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[Godot.Node, GodotSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].OnNext(System.Object )()
                :0 @ void System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()()
                ExceptionServicesImpl.cs:19 @ void System.Reactive.PlatformServices.ExceptionServicesImpl.Rethrow(System.Exception )()
                ExceptionServices.cs:16 @ void System.Reactive.ExceptionHelpers.Throw(System.Exception )()
                Stubs.cs:16 @ void System.Reactive.Stubs+<>c.<.cctor>b__2_1(System.Exception )()
                AnonymousSafeObserver.cs:62 @ void System.Reactive.AnonymousSafeObserver`1[[System.ValueTuple`4[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[Godot.Node, GodotSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].OnError(System.Exception )()
                Sink.cs:60 @ void System.Reactive.Sink`1[[System.ValueTuple`4[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[Godot.Node, GodotSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].ForwardOnError(System.Exception )()
                Sink.cs:94 @ void System.Reactive.Sink`2[[System.ValueTuple`4[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[Godot.Node, GodotSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.ValueTuple`4[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[Godot.Node, GodotSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].OnError(System.Exception )()
                Sink.cs:60 @ void System.Reactive.Sink`1[[System.ValueTuple`4[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[Godot.Node, GodotSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].ForwardOnError(System.Exception )()
                Select.cs:43 @ void System.Reactive.Linq.ObservableImpl.Select`2+Selector+_[[System.Object, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.ValueTuple`4[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[Godot.Node, GodotSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].OnNext(System.Object )()
                Subject.cs:147 @ void System.Reactive.Subjects.Subject`1[[System.Object, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].OnNext(System.Object )()
                EventTracker.cs:33 @ void GodotRx.Internal.BaseEventTracker`1[[System.ValueTuple`4[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[Godot.Node, GodotSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].OnNext(System.Object , System.Object , System.Object , System.Object )()