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### Answer The issue you're encountering is known and has been discussed in the Vapi community. Here are the steps you can take to resolve it: 1. **Clone the Repository**: Instead of using the pip install, you can clone the Vapi Python SDK repository directly and use the code from there. This will ensure you have the latest updates and avoid any missing class definitions.

bash
    git clone https://github.com/VapiAI/python.git
    cd python
    python setup.py install

2. **Consider Alternative Methods**: If cloning the repository does not solve the problem, you can use the Vapi widget for your implementation. This was a workaround suggested by a user who faced a similar issue [(1)]() . 3. **Installing Dependencies**: Ensure all dependencies are correctly installed. For example,

daily-python

might be required if you are using a specific part of the Vapi SDK. Following these steps should help you get around the import error. If you continue to face issues, please let me know.