NullReferenceException: Object reference not set to an instance of an object
VRC.Udon.Editor.UdonGraph.ReSerializeData () (at Assets/Udon/Editor/ProgramSources/UdonGraph/UdonGraph.cs:503)
VRC.Udon.Editor.UdonGraph.Connect (UnityEditor.Graphs.Slot fromSlot, UnityEditor.Graphs.Slot toSlot) (at Assets/Udon/Editor/ProgramSources/UdonGraph/UdonGraph.cs:275)
VRC.Udon.Editor.UdonEdgeGUI.EndSlotDragging (UnityEditor.Graphs.Slot slot, System.Boolean allowMultiple) (at Assets/Udon/Editor/ProgramSources/UdonGraph/UdonEdgeGUI.cs:407)
UnityEditor.Graphs.GraphGUI.DoSlot (System.Int32 id, UnityEngine.Rect position, System.String title, UnityEditor.Graphs.Slot slot, System.Boolean allowStartDrag, System.Boolean allowEndDrag, System.Boolean allowMultiple, UnityEngine.GUIStyle style) (at C:/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/GUI/GraphGUI.cs:837)
UnityEditor.Graphs.GraphGUI.LayoutSlot (UnityEditor.Graphs.Slot s, System.String title, System.Boolean allowStartDrag, System.Boolean allowEndDrag, System.Boolean allowMultiple, UnityEngine.GUIStyle style) (at C:/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/GUI/GraphGUI.cs:809)
VRC.Udon.Editor.UdonGraphGUI.NodeGUI (UnityEditor.Graphs.Node node) (at Assets/Udon/Editor/ProgramSources/UdonGraph/UdonGraphGUI.cs:408)
VRC.Udon.Editor.UdonGraphGUI+<>c__DisplayClass9_0.<OnGraphGUI>b__1 (System.Int32 <p0>) (at Assets/Udon/Editor/ProgramSources/UdonGraph/UdonGraphGUI.cs:62)
UnityEngine.GUILayout+LayoutedWindow.DoWindow (System.Int32 windowID) (at C:/buildslave/unity/build/Modules/IMGUI/GUILayout.cs:442)
UnityEngine.GUI.CallWindowDelegate (UnityEngine.GUI+WindowFunction func, System.Int32 id, System.Int32 instanceID, UnityEngine.GUISkin _skin, System.Int32 forceRect, System.Single width, System.Single height, UnityEngine.GUIStyle style) (at C:/buildslave/unity/build/Modules/IMGUI/GUI.cs:1635)
UnityEditor.EditorWindow:BeginWindows()
VRC.Udon.Editor.UdonGraphGUI:OnGraphGUI() (at Assets/Udon/Editor/ProgramSources/UdonGraph/UdonGraphGUI.cs:36)
VRC.Udon.Editor.UdonGraphWindow:DrawGraph() (at Assets/Udon/Editor/ProgramSources/UdonGraph/UdonGraphWindow.cs:169)
VRC.Udon.Editor.UdonGraphWindow:OnGUI() (at Assets/Udon/Editor/ProgramSources/UdonGraph/UdonGraphWindow.cs:139)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)