Fix ModuleNotFoundError

✅ Solution

This error typically arises when a module path has changed or a dependency is missing, often after a library update. Specifically for ragas and langchain_community, updated langchain versions might have moved modules; update your ragas version to the latest release or adjust your import statements to reflect the new langchain module locations as described in the langchain documentation. Alternatively, ensure langchain_community is installed with `pip install langchain-community`.