Curl::Err::HostResolutionError on WSL

[Roger]

I have an app running in Ubuntu 22.04 WSL through puma-dev and another app running on localhost:3000.

When the app on localhost:3000 tries to redirect to the app on puma-dev I'm getting this error:

Couldn't resolve host name: Could not resolve host: myapp.localhost

I can access myapp.localhost in the browser.

What should I do in this case?