WebID dereferencing error when WebID exists?

[zg009]

Hello, I am hosting CSS 7.1.8 using Podman with an edited version of the Docker image. I am able to navigate to the URL and create a login and pod, and all the links are GETable by default. However when I try to POST or PUT to any resources, including the ones I own by default, I receive a 401 error with the WebIdDereferencingError from the DPopWebIdExtractor which says it expects a dereferenceable resource. I am running the server behind an nginx reverse proxy, and am able to start the server as said above and navigate to the correct uri. When I also get the DPoP Header and access tokens, I verify them with JWT.io. Now I am thoroughly confused and was wondering if anyone ran into a similar issue or had a different idea? For what it's worth: The domain is similar to https://axtest01.myserver.arc.net/gaz/profile/card#me. Is there anything I should be changing with resolving uris?

[joachimvh]

To validate, the server performs a fetch request to read the WebID. Since you mention Docker, I wonder if this URL does dereference from outside of the server, but perhaps not from the point of view of the server itself?

[zg009]

Yeah, I was looking into the access verifier and it looks like a plain fetch. I'm wondering if that may be the case as well but I was curious about where to start since I'm not sure what I would need to specifically edit within my files to find this? I think the actual function responsible may be here https://github.com/CommunitySolidServer/access-token-verifier/blob/69bc7d7ebe7fdc5ab6280b3ed9639288800d4b01/src/algorithm/retrieveWebidTrustedOidcIssuers.ts#L9 , but I'm not sure what I would need to change in my build process to see what the URL is that's being queried. Would the best bet be to simply log to the console by editing in the node_modules, or would the CSS instance not log that input?