multiple rtmp stream nginx-rtmp (youtube and twitch)

nginx.conf

worker_processes auto;
rtmp_auto_push on;
events {}
error_log /dev/stdout info;
#daemon off;

rtmp {
  server {
    listen 1935;      # 1935 is the rtmp port
    listen [::]:1935; # ipv6
    chunk_size 4096;  # 4096 or 8192 ?
    meta copy;
    
    allow publish 127.0.0.1; # allow only localhost to stream to here (ipv4)
    allow publish ::1;       # allow only localhost to stream to here (ipv6)
    deny publish all;        # deny all other

    application stream { # stream from OBS to rtmp://localhost/stream
      live on;
      record off;

      # Youtube :
      push rtmp://a.rtmp.youtube.com/live2/{YT_STREM_KEY};
      
      # Twitch :
      push rtmp://{TWITCH_RTMP_STREAM_URL}/{TWITCH_STREAM_KEY};
      # live.twitch.tv/app/ or see https://help.twitch.tv/s/twitch-ingest-recommendation
    }
  }
}