Unexpected server error, XDCR related issue

Couchbase Community Edition 5.0.1 build 5003
CentOS 7 Linux dev 3.10.0-327.18.2.el7.x86_64

GET http://localhost:8091/pools/default/tasks returns
[“Unexpected server error, request logged.”]

Logged
[ns_server:error,2018-04-10T15:32:04.874+03:00,ns_1@localhost:<0.18123.445>:menelaus_web:loop:187]Server error during processing: [“web request failed”,
{path,"/pools/default/tasks"},
{method,‘GET’},
{type,throw},
{what,
{unsuccesful_goxdcr_call,
{method,“GET”},
{path,"/pools/default/replications"},
{response,
{303,
[{“Date”,“Tue, 10 Apr 2018 12:32:04 GMT”},
{“Location”,"/routes"},
{“Content-Type”,
“text/html; charset=utf-8”}],
<<"<a href="/routes">See Other.\n\n">>}}}},
{trace,
[{goxdcr_rest,query_goxdcr,4,
[{file,“src/goxdcr_rest.erl”},{line,152}]},
{goxdcr_rest,get_from_goxdcr,3,
[{file,“src/goxdcr_rest.erl”},{line,162}]},
{ns_doctor,build_tasks_list,2,
[{file,“src/ns_doctor.erl”},{line,233}]},
{menelaus_web,do_handle_tasks,3,
[{file,“src/menelaus_web.erl”},
{line,3274}]},
{request_throttler,do_request,3,
[{file,“src/request_throttler.erl”},
{line,59}]},
{menelaus_web,loop,2,
[{file,“src/menelaus_web.erl”},
{line,165}]},
{mochiweb_http,headers,5,
[{file,
“/home/couchbase/jenkins/workspace/couchbase-server-unix/couchdb/src/mochiweb/mochiweb_http.erl”},
{line,94}]},
{proc_lib,init_p_do_apply,3,
[{file,“proc_lib.erl”},{line,239}]}]}]

Couchbase Server 5.5 Beta, the issue is still there