InvalidAccessKeyId: The Access Key Id you provided does not exist in our records

[zdy-yuluowusheng]

Describe your question

I changed the docker-compose.yml to modify redis-ports. when start, in code i set callbacks to use langfuse

when progress start raise the error

the docker logs

How should I solve this?

Langfuse Cloud or Self-Hosted?

Self-Hosted

If Self-Hosted

3.152.0

If Langfuse Cloud

No response

SDK and integration versions

langfuse(python-sdk) 3.13.0

Pre-Submission Checklist

• I have checked for existing issues/discussions and consulted Langfuse AI.

[inkeep-ai-assistant[bot]]

The error "InvalidAccessKeyId: The Access Key Id you provided does not exist in our records" indicates that your Langfuse deployment cannot authenticate with the S3/Blob storage using the configured credentials.(1)

For self-hosted Langfuse v3 deployments using Docker Compose, S3/Blob storage is mandatory for storing raw event information.(1)(2) The following environment variables must be correctly configured:(1)

• LANGFUSE_S3_EVENT_UPLOAD_BUCKET (required)
• LANGFUSE_S3_EVENT_UPLOAD_ACCESS_KEY_ID (required)
• LANGFUSE_S3_EVENT_UPLOAD_SECRET_ACCESS_KEY (required)
• LANGFUSE_S3_EVENT_UPLOAD_REGION
• LANGFUSE_S3_EVENT_UPLOAD_ENDPOINT

To resolve this issue:

1. Verify your S3 credentials are correct in your docker-compose.yml file. The access key must have List, Get, and Put permissions.(1)

2. If using MinIO (the default in Docker Compose), ensure the MinIO container is running and accessible. The default credentials in the Docker Compose setup are:(1)

   • Access Key: minio
   • Secret Key: miniosecret

3. Confirm the endpoint configuration matches your setup. For MinIO in Docker Compose, it should be http://minio:9000.(1)

4. Ensure LANGFUSE_S3_EVENT_UPLOAD_FORCE_PATH_STYLE=true is set when using MinIO.(1)

The error you're seeing ("Failed to upload JSON to S3") occurs when the Langfuse worker container cannot write events to S3 storage, which is blocking trace ingestion from your Python SDK.(3)

Check your docker-compose.yml file to ensure all S3-related environment variables are properly set for both the langfuse-web and langfuse-worker containers.(2)

📚 Sources:

1. S3 / Blob Storage
2. Docker Compose
3. Migrate Langfuse v2 to v3

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Have another question? Just tag @inkeep.

[jannikmaierhoefer]

Hi @zdy-yuluowusheng, was inkeep able to help you here?

[zdy-yuluowusheng]

thank u , i solved this problem. i found minio secretkey is wrong and amended it.

[jannikmaierhoefer]

Thanks for letting me know!