Hi, I'm currently building a tool for an EU research project and I came across a bug with name_scope_stack.

I'm getting two different errors when calling predict or when calling load_model,

...
.../.venv/lib/python3.12/site-packages/keras/src/backend/common/name_scope.py", line 61, in __exit__
    name_scope_stack.pop()
    ^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'pop'

or

 .../.venv/lib/python3.12/site-packages/keras/src/backend/common/name_scope.py", line 61, in __exit__
    name_scope_stack.pop()
IndexError: pop from empty list

If I manually add a guard clause to handle the case of name_scope_stack being None or name_scope_stack being empty, my code executes fine.
Any chance you could add those guards, so we can move forward with our project?

Thanks in advance.