Is this functionality even working ? with clean assistant and added files to model it never uses them. Adding prompts to reference knowledge base always results in : Cannot read properties of undefined (reading 'message')

Try this: Go to your Vapi Dashboard and navigate to Observe > Call Logs. Review the logs for your assistant's recent calls to see if your files are being accessed and if any errors are shown related to the knowledge base. This will help pinpoint why the files aren't being used and clarify the "undefined (reading 'message')" error. This step is the fastest way to diagnose file usage issues in the Assistant Dashboard. Source: - [Vapi Debugging Documentation](https://docs.vapi.ai/debugging)

We are able to replicate this issue, but we are going to run a few more tests to make sure all file types can produce this