like this one recently https://dashboard.vapi.ai/calls/c06faa65-043d-4e73-8700-ee0af28738d1

I understand you're experiencing "unknown error" issues with your calls, including the specific one you shared. Based on our documentation, there are several common causes for unknown errors in Vapi call processing: 1. **Network and Integration Issues**: - Transport connection failures when Twilio fails to send necessary connection status - Response timeouts when Twilio doesn't respond in the expected timeframe 2. **Concurrency and Call Management**: - Hitting concurrency limits for simultaneous connections - Call state misreporting (e.g., calls ending during ringing state not registering correctly) To troubleshoot this issue, I recommend: 1. Check your logs for this specific call by logging into your dashboard and navigating to the Logs section. You can use filters to find this specific call ID. 2. Review recent changes to your code or settings that might have affected your agent's functionality. 3. Verify API keys and permissions to ensure they're correct and haven't expired. 4. Check webhook configurations if you're using them, ensuring URLs and settings are correct. 5. Test in alternative environments to rule out device-specific or network-related issues. Without seeing the specific details of your call, I can't pinpoint the exact cause, but these are the most common issues that lead to unknown errors in the Vapi platform. Sources: - [Discord Common Causes of Unknown Errors](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1336407849806462976) - [Discord Concurrency Limits](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1334159219649417289) - [Discord Troubleshooting Steps](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1334024569861963788)

Hey! To help track down this issue, could you share: - What response you expected to get - What response you actually got instead This would really help us figure out what went wrong!