addNode rest call failure

20:43:26 2021-10-13 20:43:26,753 - root - ERROR - POST http://172.23.107.190:8091/controller/addNode body: hostname=http%3A%2F%2F172.23.107.191%3A8091&user=Administrator&password=password headers: {'Content-Type': 'application/x-www-form-urlencoded', 'Authorization': 'Basic QWRtaW5pc3RyYXRvcjpwYXNzd29yZA==', 'Accept': '*/*'} error: 500 reason: unknown b'["Unexpected server error, request logged."]' auth: Administrator:password

[ns_server:error,2021-10-13T20:43:26.752-07:00,ns_1@172.23.107.190:<0.2979.0>:menelaus_util:reply_server_error:207]Server error during processing: ["web request failed",

                                 {path,"/controller/addNode"},

                                 {method,'POST'},

                                 {type,exit},

                                 {what,

                                  {shun_failed,

                                   {gen_server,call,

                                    [ns_cluster,

                                     {add_node_to_group,http,

                                      "172.23.107.191",8091,

                                      {"Administrator","password"},

                                      undefined,

                                      [kv]},

                                     240000]}}},

                                 {trace,

                                  [{gen_server,call,3,

                                    [{file,"gen_server.erl"},{line,223}]},

                                   {ns_cluster,add_node_to_group,6,

                                    [{file,"src/ns_cluster.erl"},{line,80}]},

                                   {menelaus_web_cluster,do_handle_add_node,

                                    2,

                                    [{file,"src/menelaus_web_cluster.erl"},

                                     {line,644}]},

                                   {request_throttler,do_request,3,

                                    [{file,"src/request_throttler.erl"},

                                     {line,58}]},

                                   {menelaus_util,handle_request,2,

                                    [{file,"src/menelaus_util.erl"},

                                     {line,218}]},

                                   {mochiweb_http,headers,6,

                                    [{file,

                                      "/home/couchbase/jenkins/workspace/couchbase-server-unix/couchdb/src/mochiweb/mochiweb_http.erl"},

                                     {line,150}]},

                                   {proc_lib,init_p_do_apply,3,

                                    [{file,"proc_lib.erl"},{line,249}]}]}]

[ns_server:error,2021-10-13T20:43:31.378-07:00,ns_1@172.23.107.190:wait_link_to_couchdb_node<0.6628.0>:ns_server_nodes_sup:do_wait_link_to_couchdb_node:190]ns_couchdb_port(<0.6615.0>) died with reason {abnormal,1}