NullReferenceException when opening diagnostic window in Unity

[gambit-monkey]

Using VContainer v.1.13.2 in Unity v2022.3.11f1 I am getting a null reference when opening the Diagnostics window, I created a blank project and can recreate the exception. Below are the exceptions I am experiencing

First Shown UnityEditor.IMGUI.Controls.TreeViewDataSource.ReloadData () (at <9920ff0c944845d7b9f9a61ef1478edc>:0) UnityEditor.IMGUI.Controls.TreeView+TreeViewControlDataSource.ReloadData () (at <9920ff0c944845d7b9f9a61ef1478edc>:0) UnityEditor.IMGUI.Controls.TreeViewController.ReloadData () (at <9920ff0c944845d7b9f9a61ef1478edc>:0) UnityEditor.IMGUI.Controls.TreeView.Reload () (at <9920ff0c944845d7b9f9a61ef1478edc>:0) VContainer.Editor.Diagnostics.VContainerDiagnosticsInfoTreeView..ctor (UnityEditor.IMGUI.Controls.TreeViewState state, UnityEditor.IMGUI.Controls.MultiColumnHeader header) (at ./Library/PackageCache/jp.hadashikick.vcontainer@c6f9c51dbc/Editor/Diagnostics/VContainerDiagnosticsTreeView.cs:121) VContainer.Editor.Diagnostics.VContainerDiagnosticsInfoTreeView..ctor () (at ./Library/PackageCache/jp.hadashikick.vcontainer@c6f9c51dbc/Editor/Diagnostics/VContainerDiagnosticsTreeView.cs:108) VContainer.Editor.Diagnostics.VContainerDiagnosticsWindow.OnEnable () (at ./Library/PackageCache/jp.hadashikick.vcontainer@c6f9c51dbc/Editor/Diagnostics/VContainerDiagnosticsWindow.cs:74) UnityEditor.EditorWindow:GetWindow(String) VContainer.Editor.Diagnostics.VContainerDiagnosticsWindow:OpenWindow() (at ./Library/PackageCache/jp.hadashikick.vcontainer@c6f9c51dbc/Editor/Diagnostics/VContainerDiagnosticsWindow.cs:27)

Repeated Exception afterwards NullReferenceException: Object reference not set to an instance of an object VContainer.Editor.Diagnostics.VContainerDiagnosticsWindow.RenderHeadPanel () (at ./Library/PackageCache/jp.hadashikick.vcontainer@c6f9c51dbc/Editor/Diagnostics/VContainerDiagnosticsWindow.cs:109) VContainer.Editor.Diagnostics.VContainerDiagnosticsWindow.OnGUI () (at ./Library/PackageCache/jp.hadashikick.vcontainer@c6f9c51dbc/Editor/Diagnostics/VContainerDiagnosticsWindow.cs:88) UnityEditor.HostView.InvokeOnGUI (UnityEngine.Rect onGUIPosition) (at <9920ff0c944845d7b9f9a61ef1478edc>:0) UnityEditor.DockArea.DrawView (UnityEngine.Rect dockAreaRect) (at <9920ff0c944845d7b9f9a61ef1478edc>:0) UnityEditor.DockArea.OldOnGUI () (at <9920ff0c944845d7b9f9a61ef1478edc>:0) UnityEngine.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt, UnityEngine.Matrix4x4 parentTransform, UnityEngine.Rect clippingRect, System.Boolean isComputingLayout, UnityEngine.Rect layoutSize, System.Action onGUIHandler, System.Boolean canAffectFocus) (at <7c69dfc1e63a4ea388c73014d3c7ce20>:0) UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&)

Debugging shows the treeView as null on line 109 var flattenOn = GUILayout.Toggle(treeView.Flatten, FlattenHeadContent, EditorStyles.toolbarButton);