NGINX rtmp module multiple push and grab from another app?

Hey, guys!

I have problems with the rtmp module. There is an input application,
pushes “xyz” to the “2nd” application, that exec_pushes with ffmpeg to a
“3rd” application. From “3rd” it gets pushed to 2 rtmp servers and to
“rtmp://localhost/4th” - The problem is, that I can’t grab
“rtmp://IP/4th/xyz” for some reason, but it’s OK when I try from “3rd”.
ideas? :confused:

Best regards,