### Answer
It sounds like there might be an issue with how the assistant is being set up or fetched in your Vapi environment. Make sure to double-check that the assistant's ID is correctly specified and that it has been properly configured in the Vapi dashboard. You can refer to the documentation on how to create and manage assistants for detailed steps [(1)](
) .
If you've confirmed that the setup is correct and the problem persists, you may want to review the system prompts or the model configuration to ensure they're aligned with the expected parameters and formatting as outlined in the assistant setup documentation .
For further assistance, reviewing the exact error message or logs might provide more insights into what might be going wrong. If necessary, rechecking provider keys and ensuring that they are active and correctly set could also be crucial .