Admin TypeError - Cannot call delete() after .distinct()

[Mike Dewhirst]

Trying to delete a record in the Admin list view by checking the checkbox and selecting the delete action and clicking [Go] the following 500 error happened.

Thanks for any hints

Mike

Traceback (most recent call last):

    response = get_response(request)

    response = wrapped_callback(request, *callback_args, **callback_kwargs)

    return self.admin_site.admin_view(view)(*args, **kwargs)

    response = view_func(request, *args, **kwargs)

    response = view_func(request, *args, **kwargs)

    return view(request, *args, **kwargs)

    return bound_method(*args, **kwargs)

    response = view_func(request, *args, **kwargs)

    response = func(self, request, queryset)

    modeladmin.delete_queryset(request, queryset)

    queryset.delete()

    raise TypeError('Cannot call delete() after .distinct().')

Exception Type: TypeError at /admin/chemical/chemical/
Exception Value: Cannot call delete() after .distinct().

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It seems to be all within the Admin so I'm not sure how to proceed from here.   File "D:\Users\mike\envs\xxai\lib\site-packages\django\core\handlers\exception.py", line 47, in inner   File "D:\Users\mike\envs\xxai\lib\site-packages\django\core\handlers\base.py", line 181, in _get_response   File "D:\Users\mike\envs\xxai\lib\site-packages\django\contrib\admin\options.py", line 616, in wrapper   File "D:\Users\mike\envs\xxai\lib\site-packages\django\utils\decorators.py", line 130, in _wrapped_view   File "D:\Users\mike\envs\xxai\lib\site-packages\django\views\decorators\cache.py", line 44, in _wrapped_view_func   File "D:\Users\mike\envs\xxai\lib\site-packages\django\contrib\admin\sites.py", line 232, in inner   File "D:\Users\mike\envs\xxai\lib\site-packages\django\utils\decorators.py", line 43, in _wrapper   File "D:\Users\mike\envs\xxai\lib\site-packages\django\utils\decorators.py", line 130, in _wrapped_view   File "D:\Users\mike\envs\xxai\lib\site-packages\django\contrib\admin\options.py", line 1739, in changelist_view     response = self.response_action(request, queryset=cl.get_queryset(request))   File "D:\Users\mike\envs\xxai\lib\site-packages\django\contrib\admin\options.py", line 1408, in response_action   File "D:\Users\mike\envs\xxai\lib\site-packages\django\contrib\admin\actions.py", line 45, in delete_selected   File "D:\Users\mike\envs\xxai\lib\site-packages\django\contrib\admin\options.py", line 1109, in delete_queryset   File "D:\Users\mike\envs\xxai\lib\site-packages\django\db\models\query.py", line 728, in delete

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