Not able to forward traffic from AWS ALB to Metabase running on AWS Fargate

Hello @Mws, I am not sure if it's the same issue, but in my case, the problem occurs because AWS ALB forwards the request to a specific target group along with the defined path pattern.
For example:
https://domain-name/app/metabase is forwarded to http://localhost:3000/app/metabase, but this path is not found in the Metabase app.

To solve this, I set up an Nginx reverse proxy in front of the Metabase app to trim away the target group path before forwarding the request to the Metabase app.

reference

Hope it helps.