Hi, I am getting the same error as well.

On my local setup, everything works fine with a local ip address.
When I request the image directly on my local setup, the browser use the following cookie:

clearml_token_basic: XXX
domian: 192.168.51.60

When I request the image on my k8s cluster, the browser cannot find the cookie and return a 401 respond.

The default cookie level is different as well:

clearml_token_basic: XXX
domain: app.xxx.com

I try plugging the cookie when request from files.xxx.com but it does not works.