AttributeError module collections has no attribute MutableMapping

This error occurs when you try to access the attribute MutableMapping in the collections module, but it is not defined in your version of Python.

MutableMapping is a class that provides a generic interface for working with mutable mappings (e.g., dictionaries) in Python. It was introduced in Python 2.6 and is part of the collections module.

To fix this error, you can either upgrade your Python version to one that includes MutableMapping or use a different class or module that provides similar functionality. Alternatively, you can modify your code to work without using MutableMapping