Handle null table in TableConfigForm

netbox/utilities/forms/forms.py

@@ -132,8 +132,9 @@ class TableConfigForm(forms.Form):
         super().__init__(*args, **kwargs)
 
         # Initialize columns field based on table attributes
-        self.fields['available_columns'].choices = table.available_columns
-        self.fields['columns'].choices = table.selected_columns
+        if table:
+            self.fields['available_columns'].choices = table.available_columns
+            self.fields['columns'].choices = table.selected_columns
 
     @property
     def table_name(self):