Troubleshooting and FAQ

This page addresses frequently asked questions and common troubleshooting topics for Langfuse Observability.

If you don’t find a solution to your issue here, try using Ask AI for instant answers. For bug reports, please open a ticket on GitHub Issues. For general questions or support, visit our support page.

FAQ

• How do I track LLM cost and tokens in Langfuse?
• How to enable or disable Langfuse tracing?
• How to manage different environments in Langfuse?
• How to use Langfuse Tracing in Serverless Functions (AWS Lambda, Vercel, Cloudflare Workers, etc.)
• I have setup Langfuse, but I do not see any traces in the dashboard. How to solve this?
• Link prompt management with tracing in Langfuse
• Where do I find my Langfuse API keys?
• Which packages and projects are using Langfuse?
• Why are the input and output of a trace empty?

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