cant set the forward server to host name

[Alacard]

when setting up a new proxy host, your unable to use the server hostname for the destination, show error data/forward_host must match pattern "^(([^.]+.)+[^.]+)|([[0-9a-f:]+])$" when you try

[Zoey2936]

I think jellyseerr is a docker container, right? I would recommend you to use static ips, since nginx has not the best dns implementation, but if you need to use a hostname you can try to use <container-name>.<docker-network-name> as input this should also work, but as I wrote dns can fail.

I personally handle it like this:
I run NPMplus in network mode host and to connect to my containers I expose the needed ports of them like this "127.0.0.1::" and in npmplus I proxy to 127.0.0.1 with . Through this I don't need static IPs and have no problem with DNS. Also containers of diffrent services can't talk to each other since they don't need to be in the same docker network so that NPMplus can talk to them (or NPMplus doesn't need to be in all docker networks). And the non docker services could connect to all containers anyway