NullReference with specific gameObjects

[rivax95]

NullReferenceException: Object reference not set to an instance of an object
MethodSelector.BuildSelectionTree (Sirenix.OdinInspector.Editor.OdinMenuTree tree) (at Assets/Editor/MethodSelector.cs:56)
Sirenix.OdinInspector.Editor.OdinSelector1[T].get_SelectionTree () (at <01426cf02d6b496987759788511e04d9>:0) Sirenix.OdinInspector.Editor.OdinSelector1[T].SetSelection (T selected) (at <01426cf02d6b496987759788511e04d9>:0)
BetterEventDrawer.CreateSelector (UnityEngine.Rect arg) (at Assets/Editor/BetterEventDrawer.cs:121)
Sirenix.OdinInspector.Editor.OdinSelector1[T].DrawSelectorDropdown (UnityEngine.Rect rect, UnityEngine.GUIContent btnLabel, System.Func2[T,TResult] createSelector, UnityEngine.GUIStyle style) (at <01426cf02d6b496987759788511e04d9>:0)
Sirenix.OdinInspector.Editor.OdinSelector1[T].DrawSelectorDropdown (UnityEngine.Rect rect, System.String btnLabel, System.Func2[T,TResult] createSelector, UnityEngine.GUIStyle style) (at <01426cf02d6b496987759788511e04d9>:0)
BetterEventDrawer.DrawPropertyLayout (UnityEngine.GUIContent label) (at Assets/Editor/BetterEventDrawer.cs:33)
Sirenix.OdinInspector.Editor.OdinDrawer.CallNextDrawer (UnityEngine.GUIContent label) (at <01426cf02d6b496987759788511e04d9>:0)
Sirenix.OdinInspector.Editor.Drawers.NullableReferenceDrawer1[T].DrawPropertyLayout (UnityEngine.GUIContent label) (at <01426cf02d6b496987759788511e04d9>:0) Sirenix.OdinInspector.Editor.OdinDrawer.CallNextDrawer (UnityEngine.GUIContent label) (at <01426cf02d6b496987759788511e04d9>:0) Sirenix.OdinInspector.Editor.Drawers.FixUnityNullDrawer1[T].DrawPropertyLayout (UnityEngine.GUIContent label) (at <01426cf02d6b496987759788511e04d9>:0)
Sirenix.OdinInspector.Editor.OdinDrawer.CallNextDrawer (UnityEngine.GUIContent label) (at <01426cf02d6b496987759788511e04d9>:0)
Sirenix.OdinInspector.Editor.Drawers.ReferenceDrawer1[T].DrawPropertyLayout (UnityEngine.GUIContent label) (at <01426cf02d6b496987759788511e04d9>:0) Sirenix.OdinInspector.Editor.OdinDrawer.CallNextDrawer (UnityEngine.GUIContent label) (at <01426cf02d6b496987759788511e04d9>:0) Sirenix.OdinInspector.Editor.Drawers.PropertyContextMenuDrawer1[T].DrawPropertyLayout (UnityEngine.GUIContent label) (at <01426cf02d6b496987759788511e04d9>:0)
Sirenix.OdinInspector.Editor.OdinDrawer.DrawProperty (UnityEngine.GUIContent label) (at <01426cf02d6b496987759788511e04d9>:0)
Sirenix.OdinInspector.Editor.InspectorProperty.Draw (UnityEngine.GUIContent defaultLabel) (at <01426cf02d6b496987759788511e04d9>:0)
Rethrow as OdinPropertyException: This error occurred while being drawn by Odin.
Current IMGUI event: Used
Odin Property Path: eventsByIDB.{"DespertarEnemigoPesca"}.Event.Events.$0
Odin Drawer Chain:

PropertyContextMenuDrawer
ReferenceDrawer
FixUnityNullDrawer
NullableReferenceDrawer
BetterEventDrawer
CompositeDrawer.
UnityEngine.Debug:LogException(Exception)
Sirenix.OdinInspector.Editor.InspectorProperty:Draw(GUIContent)
Sirenix.OdinInspector.Editor.Drawers.CollectionDrawer1:DrawItem(InspectorProperty, DragHandle) Sirenix.OdinInspector.Editor.Drawers.CollectionDrawer1:DrawItems()
Sirenix.OdinInspector.Editor.Drawers.CollectionDrawer1:DrawPropertyLayout(GUIContent) Sirenix.OdinInspector.Editor.OdinDrawer:CallNextDrawer(GUIContent) Sirenix.OdinInspector.Editor.Drawers.NullableReferenceDrawer1:DrawPropertyLayout(GUIContent)
Sirenix.OdinInspector.Editor.OdinDrawer:CallNextDrawer(GUIContent)
Sirenix.OdinInspector.Editor.Drawers.FixUnityNullDrawer1:DrawPropertyLayout(GUIContent) Sirenix.OdinInspector.Editor.OdinDrawer:CallNextDrawer(GUIContent) Sirenix.OdinInspector.Editor.Drawers.ReferenceDrawer1:DrawPropertyLayout(GUIContent)
Sirenix.OdinInspector.Editor.OdinDrawer:CallNextDrawer(GUIContent)
Sirenix.OdinInspector.Editor.Drawers.PropertyContextMenuDrawer1:DrawPropertyLayout(GUIContent) Sirenix.OdinInspector.Editor.OdinDrawer:DrawProperty(GUIContent) Sirenix.OdinInspector.Editor.InspectorProperty:Draw(GUIContent) BetterEventListDrawer:DrawPropertyLayout(GUIContent) (at Assets/Editor/BetterEventListDrawer.cs:10) Sirenix.OdinInspector.Editor.OdinDrawer:CallNextDrawer(GUIContent) Sirenix.OdinInspector.Editor.Drawers.PropertyContextMenuDrawer1:DrawPropertyLayout(GUIContent)
Sirenix.OdinInspector.Editor.OdinDrawer:DrawProperty(GUIContent)
Sirenix.OdinInspector.Editor.InspectorProperty:Draw(GUIContent)
Sirenix.OdinInspector.Editor.Drawers.CompositeDrawer:DrawPropertyLayout(GUIContent)
Sirenix.OdinInspector.Editor.OdinDrawer:CallNextDrawer(GUIContent)
Sirenix.OdinInspector.Editor.Drawers.NullableReferenceDrawer1:DrawField(GUIContent) Sirenix.OdinInspector.Editor.Drawers.NullableReferenceDrawer1:DrawPropertyLayout(GUIContent)
Sirenix.OdinInspector.Editor.OdinDrawer:CallNextDrawer(GUIContent)
Sirenix.OdinInspector.Editor.Drawers.FixUnityNullDrawer1:DrawPropertyLayout(GUIContent) Sirenix.OdinInspector.Editor.OdinDrawer:CallNextDrawer(GUIContent) Sirenix.OdinInspector.Editor.Drawers.ReferenceDrawer1:DrawPropertyLayout(GUIContent)
Sirenix.OdinInspector.Editor.OdinDrawer:CallNextDrawer(GUIContent)
Sirenix.OdinInspector.Editor.Drawers.PropertyContextMenuDrawer1:DrawPropertyLayout(GUIContent) Sirenix.OdinInspector.Editor.OdinDrawer:DrawProperty(GUIContent) Sirenix.OdinInspector.Editor.InspectorProperty:Draw(GUIContent) Sirenix.OdinInspector.Editor.Drawers.DictionaryDrawer3:DrawElements(IPropertyValueEntry1, GUIContent) Sirenix.OdinInspector.Editor.Drawers.DictionaryDrawer3:DrawPropertyLayout(GUIContent)
Sirenix.OdinInspector.Editor.OdinDrawer:CallNextDrawer(GUIContent)
Sirenix.OdinInspector.Editor.Drawers.NullableReferenceDrawer1:DrawPropertyLayout(GUIContent) Sirenix.OdinInspector.Editor.OdinDrawer:CallNextDrawer(GUIContent) Sirenix.OdinInspector.Editor.Drawers.FixUnityNullDrawer1:DrawPropertyLayout(GUIContent)
Sirenix.OdinInspector.Editor.OdinDrawer:CallNextDrawer(GUIContent)
Sirenix.OdinInspector.Editor.Drawers.ReferenceDrawer1:DrawPropertyLayout(GUIContent) Sirenix.OdinInspector.Editor.OdinDrawer:CallNextDrawer(GUIContent) Sirenix.OdinInspector.Editor.Drawers.PropertyContextMenuDrawer1:DrawPropertyLayout(GUIContent)
Sirenix.OdinInspector.Editor.OdinDrawer:DrawProperty(GUIContent)
Sirenix.OdinInspector.Editor.InspectorProperty:Draw(GUIContent)
Sirenix.OdinInspector.Editor.InspectorProperty:Draw()
Sirenix.OdinInspector.Editor.Drawers.UnityObjectRootDrawer`1:DrawPropertyLayout(GUIContent)
Sirenix.OdinInspector.Editor.OdinDrawer:DrawProperty(GUIContent)
Sirenix.OdinInspector.Editor.InspectorProperty:Draw(GUIContent)
Sirenix.OdinInspector.Editor.PropertyTree:DrawProperties()
Sirenix.OdinInspector.Editor.PropertyTree:Draw(Boolean)
Sirenix.OdinInspector.Editor.OdinEditor:DrawTree()
Sirenix.OdinInspector.Editor.OdinEditor:DrawOdinInspector()
Sirenix.OdinInspector.Editor.OdinEditor:OnInspectorGUI()
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)