Oh, I forgot about the logs. I was trying different approach.
I updated my previous response with logs at both configs.
To better explain the situation, I have drawen the my technical setup in the design attached.
My Goal is to redirect specific responses coming from PHP/Symfony (status code 307 or having a specific header) to be handled by other service (nuxt) hilighted by the orange line
I failed so far to reach the nuxt service, because the nuxt logs are empty showing no hit.
I hope this makes it much more clearer.
