[Thu May 05 17:11:31.585990 2016] [proxy:error] [pid 6648:tid 1272] (OS 10061)No connection could be made because the target machine actively refused it. : AH00957: HTTP: attempt to connect to 127.0.0.1:3001 (127.0.0.1) failed [Thu May 05 17:11:31.585990 2016] [proxy:error] [pid 6648:tid 1272] AH00959: ap_proxy_connect_backend disabling worker for (127.0.0.1) for 60s [Thu May 05 17:11:31.585990 2016] [proxy_http:error] [pid 6648:tid 1272] [client IP:49488] AH01114: HTTP: failed to make connection to backend: 127.0.0.1, referer: https://ABC.ABC.AB.AB/redmine/