RTMP Module - [alert] 6031#0 too big RTMP chunk size:134217728

First question: are these alert #'s (6031) defined anywhere? I could not find it.

I am using OBS to send a stream to the rtmp server. My OBS stream setting is: rtmp://192.168.0.47:1935/LPC1

I want the rtmp server to relay/redirect the stream to the real Media server
at 10.57.215.214 but I am getting this error every 3 seconds in the nginx error.log:

2018/06/07 19:14:20 [alert] 6031#0: *159 too big RTMP chunk size:134217728, client: 10.57.215.214:1935/live, server: ngx-relay


rtmp {
server {
listen 1935;
chunk_size 4096;
application live {
live on;
record off;
}
application vod {
play /var/www/html/media/vod;
}
application LPC1 {
live on;
push rtmp://10.57.215.214:1935/live;
sync 300ms;
}
application vod_rpt {
play_local_path /var/www/html/media/vod_rpt_cache;
play /var/www/html/media/vod_rpt_cache http://192.168.0.4/media/vod;
sync 300ms;
}
}
}

Any idea what could be wrong?

Thanks,

Ray