Connection reset by peer

After upgrade to version 5.0.9. we've noticed this error message in our logs related to our RTMP connections:

[Thu Oct 22 08:20:07.447597 2015] [proxy_http:error] [pid 12208:tid 139852651566848] (104)Connection reset by peer: [client a.b.c.d:34054] AH01095: prefetch request body failed to 127.0.0.1:1935 (localhost) from a.b.c.d ()

Any idea on what is causing this error?