Lemmy Self-host: Error linking to other communities

I am running 0.17.3 version of Lemmy installed by docker-compose, in front of it I am running NPM (ngnix proxy manager) which handles all of my public facing docker images.

The local site seems to function except for one area, I can’t search for or properly federate other instances. I believe I have narrow the problem down to one particular function:

https://lemmy.timgilbert.be /c/reddit@lemmy.ml

This results in a response in the browser:

404: couldnt_find_community

And an error log in docker logs for the server:

2023-06-13T01:48:29.196432Z  WARN Error encountered while processing the incoming HTTP request: lemmy_server::root_span_builder: couldnt_find_community: Failed to resolve actor for reddit@lemmy.ml
   0: lemmy_apub::fetcher::resolve_actor_identifier
             at crates/apub/src/fetcher/mod.rs:16
   1: lemmy_apub::api::read_community::perform
           with self=GetCommunity { id: None, name: Some("reddit@lemmy.ml"), auth: Some(Sensitive) }
             at crates/apub/src/api/read_community.rs:30
   2: lemmy_server::root_span_builder::HTTP request
           with http.method=GET http.scheme="http" http.host=lemmy.timgilbert.be http.target=/api/v3/community otel.kind="server" request_id=d7e7d1e0-a03f-4e28-ad98-a4d6027b7a47 http.status_code=400 otel.status_code="OK"
             at src/root_span_builder.rs:16
LemmyError { message: Some("couldnt_find_community"), inner: Failed to resolve actor for reddit@lemmy.ml, context: "SpanTrace" }

If I hit this same URL but from a working site:

https://lemmy.world /c/reddit@lemmy.ml

and it receives a response.

I also see other other errors/warning all of which indicates some problem with my settings for in-bound:

2023-06-13T01:54:08.818240Z  WARN Error encountered while processing the incoming HTTP request: lemmy_server::root_span_builder: cant accept local object from remote instance
   0: lemmy_apub::objects::comment::verify
             at crates/apub/src/objects/comment.rs:135
   1: lemmy_apub::activities::create_or_update::comment::verify
             at crates/apub/src/activities/create_or_update/comment.rs:156
   2: lemmy_apub::activities::community::announce::receive
             at crates/apub/src/activities/community/announce.rs:149
   3: lemmy_server::root_span_builder::HTTP request
           with http.method=POST http.scheme="https" http.host=lemmy.timgilbert.be http.target=/inbox otel.kind="server" request_id=ddee706e-a793-409c-b6e7-eafe1fba646f http.status_code=400 otel.status_code="OK"
             at src/root_span_builder.rs:16
LemmyError { message: None, inner: cant accept local object from remote instance, context: "SpanTrace" }

I suspect that it has to do with having two NGINX wrappers, one that is setup by Lemmy’s docker-compose and one for my NPM.

Anyone else have similar problems?