api_prefix doesn't work

I’ve deployed burrow in k8s. To access it I use ALB burrow.staging.some.domain.com
The configuration file has api_proxy set to “/staging/burrow”
Staging.toml:

[gerenal]
pidfile = ...
access-control-allow-origin = ...
api_prefix =  "/staging/burrow"

….
The nginx.conf:

location /staging/burrow  {
  set $upstream_something http://burrow.staging.some.domain.com;
  proxy_pass $upstream_something;
}

What do I expect?
When I run from nginx container
Curl –v http://burrow.staging.some.domain.com/v3/kafka I see http 200 ok
But also I want to see
Curl –v localhost/staging/burrow to see 200 ok as well
But I see 404
Maybe I’ve configured it in wrong place?
Thanks

Start by reproducing the 404 for /staging/burrow using the shown Burrow and nginx configuration, then trace how api_prefix is read and how the request is routed. Done means the prefixed endpoint returns HTTP 200 while the existing /v3/kafka endpoint continues to work.