### Answer
The error "pipeline-error-first-message-failed" you're encountering generally indicates a failure during the initial phase of the call processing pipeline. This could be related to a configuration issue with the ElevenLabs voice setup or the multilingual setting. Unfortunately, the provided documentation does not cover specific error codes or troubleshooting steps for this particular scenario.
For detailed support and to resolve this issue, please reach out to Vapi's support directly at [Contact Us](
support@vapi.ai). They should be able to provide more specific guidance on resolving errors with ElevenLabs voices and multilingual settings.