Rocket.Chat image preview "base64 undefined" #36767
Description
Description:
When using Filesystem as file storage, it fails to generate an image preview. I mounted a Backblaze bucket to /mnt/rocketfs using s3fs and then mounted that directory to /opt/rocketfs in the container. File upload and download work fine. But it can't generate a preview.
data:image/png;base64,undefined
Failed to load resource: net::ERR_INVALID_URL
These are what I'm seeing in browser console.
Steps to reproduce:
- Mount a B2 Bucket using S3fs
- Mount that dir to container in the compose file
- Set Filesystem as file storage in Settings
Expected behavior:
Preview should be generated normally
Actual behavior:
Server Setup Information:
- Version of Rocket.Chat Server: 7.9.3
- License Type: Starter
- Number of Users: 2
- Operating System: Ubuntu
- Deployment Method: Docker
- Number of Running Instances: 1
- DB Replicaset Oplog:
- NodeJS Version: v22.16.0
- MongoDB Version: 8.0.12 / wiredTiger (oplog Enabled)
Client Setup Information
- Desktop App or Browser Version:
- Operating System:
Additional context
Relevant logs:
[2025-08-21T10:42:31.260Z] INFO 41779381-fa11-44d7-a4d9-508351821fd4/BROKER: ✔ ServiceBroker with 2 service(s) started successfully in 688ms.
{"level":50,"time":"2025-08-21T11:24:21.150Z","pid":1,"hostname":"69c272881f98","name":"System","err":{"type":"Error","message":"Input buffer contains unsupported image format","stack":"Error: Input buffer contains unsupported image format"},"msg":"Input buffer contains unsupported image format"}
{"level":50,"time":"2025-08-21T11:29:26.452Z","pid":1,"hostname":"69c272881f98","name":"System","err":{"type":"Error","message":"Input buffer contains unsupported image format","stack":"Error: Input buffer contains unsupported image format"},"msg":"Input buffer contains unsupported image format"}