Addition of new node fails due to "Join completion call failed. Failed to start ns_server cluster processes back."

[cluster:error,2017-03-07T11:15:31.559-08:00,ns_1@172.23.132.20:ns_cluster<0.146.0>:ns_cluster:perform_actual_join:1134]Failed to join cluster because of: {error,start_cluster_failed,

                                    <<"Failed to start ns_server cluster processes back. Logs might have more details.">>,

                                    {error,

                                     {shutdown,

                                      {failed_to_start_child,ns_server_sup,

                                       {shutdown,

                                        {failed_to_start_child,

                                         memcached_permissions,

                                         {{badmatch,false},

                                          [{menelaus_roles,

                                            '-compile_roles/2-fun-0-',2,

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

                                             {line,345}]},

                                           {lists,map,2,

                                            [{file,"lists.erl"},{line,1224}]},

                                           {memcached_permissions,

                                            permissions_for_role,3,

                                            [{file,

                                              "src/memcached_permissions.erl"},

                                             {line,126}]},

                                           {memcached_permissions,

                                            permissions_for_role,4,

                                            [{file,

                                              "src/memcached_permissions.erl"},

                                             {line,135}]},

                                           {memcached_permissions,

                                            '-permissions_for_user/4-fun-0-',

                                            4,

                                            [{file,

                                              "src/memcached_permissions.erl"},

                                             {line,149}]},

                                           {lists,foldl,3,

                                            [{file,"lists.erl"},{line,1248}]},

                                           {memcached_permissions,

                                            permissions_for_user,4,

                                            [{file,

                                              "src/memcached_permissions.erl"},

                                             {line,147}]},

                                           {memcached_permissions,

                                            '-jsonify_users/3-fun-1-',5,

                                            [{file,

                                              "src/memcached_permissions.erl"},

                                             {line,197}]}]}}}}}}}