Null ref for null root during playmode.

[naelstrof]

ArgumentNullException: Value cannot be null.
Parameter name: parent
UnityEngine.Bindings.ThrowHelper.ThrowArgumentNullException (System.Object obj, System.String parameterName) (at <1b6535aa091d41cf8b3ca222ed9ceef0>:0)
UnityEngine.Transform.IsChildOf (UnityEngine.Transform parent) (at <1b6535aa091d41cf8b3ca222ed9ceef0>:0)
GatorDragonGames.JigglePhysics.JiggleRigDataPropertyDrawer.CreatePropertyGUI (UnityEditor.SerializedProperty property) (at ./Packages/UnityJigglePhysics-upm/Editor/JiggleRigDataPropertyDrawer.cs:58)
UnityEditor.UIElements.PropertyField.Reset (UnityEditor.SerializedProperty newProperty) (at <2e4eaf245b924ed1b8c17467295ae042>:0)
UnityEditor.UIElements.PropertyField.Reset (UnityEditor.UIElements.SerializedPropertyBindEvent evt) (at <2e4eaf245b924ed1b8c17467295ae042>:0)
UnityEditor.UIElements.PropertyField.HandleEventBubbleUp (UnityEngine.UIElements.EventBase evt) (at <2e4eaf245b924ed1b8c17467295ae042>:0)
UnityEngine.UIElements.EventDispatchUtilities.HandleEventAtTargetAndDefaultPhase (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.BaseVisualElementPanel panel, UnityEngine.UIElements.VisualElement target) (at <aa7eb8f89f914134b4ea7013d80a81c3>:0)
UnityEditor.UIElements.Bindings.SerializedObjectBindingContext.SendBindingEvent[TEventType] (TEventType evt, UnityEngine.UIElements.VisualElement target) (at <50f04750a0da4bf0ae62261569d465d6>:0)
UnityEditor.UIElements.Bindings.SerializedObjectBindingContext.BindPropertyRelative (UnityEngine.UIElements.IBindable field, UnityEditor.SerializedProperty parentProperty) (at <50f04750a0da4bf0ae62261569d465d6>:0)
UnityEditor.UIElements.Bindings.SerializedObjectBindingContext.BindTree (UnityEngine.UIElements.VisualElement element, UnityEditor.SerializedProperty parentProperty) (at <50f04750a0da4bf0ae62261569d465d6>:0)
UnityEditor.UIElements.Bindings.SerializedObjectBindingContext.BindTree (UnityEngine.UIElements.VisualElement element, UnityEditor.SerializedProperty parentProperty) (at <50f04750a0da4bf0ae62261569d465d6>:0)
UnityEditor.UIElements.Bindings.SerializedObjectBindingContext.BindTree (UnityEngine.UIElements.VisualElement element, UnityEditor.SerializedProperty parentProperty) (at <50f04750a0da4bf0ae62261569d465d6>:0)
UnityEditor.UIElements.Bindings.SerializedObjectBindingContext.ContinueBinding (UnityEngine.UIElements.VisualElement element, UnityEditor.SerializedProperty parentProperty) (at <50f04750a0da4bf0ae62261569d465d6>:0)
UnityEditor.UIElements.Bindings.SerializedObjectBindingContext.Bind (UnityEngine.UIElements.VisualElement element) (at <50f04750a0da4bf0ae62261569d465d6>:0)
UnityEditor.UIElements.Bindings.DefaultSerializedObjectBindingImplementation.Bind (UnityEngine.UIElements.VisualElement element, UnityEditor.SerializedObject obj) (at <50f04750a0da4bf0ae62261569d465d6>:0)
UnityEditor.UIElements.BindingExtensions.Bind (UnityEngine.UIElements.VisualElement element, UnityEditor.SerializedObject obj) (at <2e4eaf245b924ed1b8c17467295ae042>:0)
UnityEditor.UIElements.InspectorElement..ctor (UnityEditor.SerializedObject obj, UnityEditor.Editor editor, UnityEditor.UIElements.InspectorElement+DefaultInspectorFramework defaultInspectorFramework) (at <2e4eaf245b924ed1b8c17467295ae042>:0)
UnityEditor.UIElements.InspectorElement..ctor (UnityEditor.Editor editor, UnityEditor.UIElements.InspectorElement+DefaultInspectorFramework defaultInspectorFramework) (at <2e4eaf245b924ed1b8c17467295ae042>:0)
UnityEditor.UIElements.InspectorElement..ctor (UnityEditor.Editor editor) (at <2e4eaf245b924ed1b8c17467295ae042>:0)
UnityEditor.UIElements.EditorElement.BuildInspectorElement () (at <2e4eaf245b924ed1b8c17467295ae042>:0)
UnityEditor.UIElements.EditorElement.CreateInspectorElement () (at <2e4eaf245b924ed1b8c17467295ae042>:0)
UnityEditor.EditorElementUpdater.CreateInspectorElementsForViewport (UnityEngine.UIElements.ScrollView viewport, UnityEngine.UIElements.VisualElement contentContainer) (at <2e4eaf245b924ed1b8c17467295ae042>:0)
UnityEditor.PropertyEditor.RebuildContentsContainers () (at <2e4eaf245b924ed1b8c17467295ae042>:0)
UnityEditor.InspectorWindow.RedrawFromNative () (at <2e4eaf245b924ed1b8c17467295ae042>:0)