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### Answer The error you're encountering seems to be related to a JavaScript issue where an undefined object or property is being accessed. This typically happens in scenarios where your code is expecting an object to be initialized and accessible, but for some reason, it's not present at the time of access. For Vapi-related SDKs, ensuring that every required object and its properties are appropriately defined and accessible before they're called is crucial. Since the error message points out an issue with reading the 'producers' property, you should verify the initialization and configuration stages of your setup. Here are a couple of things to check: 1. **Initialization**: Make sure that the Vapi instance is correctly initialized and that all parameters required for its configuration are correctly passed. 2. **Code Location**: Errors like this can sometimes be caused by scripts running before the DOM is fully loaded or before necessary libraries have been loaded. Ensure your Vapi scripts are loaded at the correct point in your application's lifecycle. 3. **Version Compatibility**: Double-check that all parts of your software stack are compatible. Sometimes, using the latest version of one library can cause conflicts if other parts of the stack are outdated. Unfortunately, without specific details on how you are initializing and using the Vapi library in your code, these suggestions are quite general. If you provide a snippet of how you're setting up and calling the Vapi start function, I could give more precise advice. For now, these general checks might help you to debug the issue.

Got it. Tagging @User for additional help.