Prod Message/delete issue

2018-11-15T14:10:30::roster_message::"{p2p,<<\"359884602998_608\">>,<<\"359887134940_609\">>}":[]:Message/delete:23667
2018-11-15T14:10:30::roster::user [] not found in userlist 608
2018-11-15T14:10:30::roster_message::ASYNC:roster_message

=ERROR REPORT==== 15-Nov-2018::07:10:30 ===
** Generic server <0.30360.0> terminating
** Last message in was {send_push,[],<<"359884602998_608">>,
                           {'Message',23703,chain,
                               {p2p,<<"359884602998_608">>,
                                   <<"359887134940_609">>},
                               [],23701,[],<<"359887134940_609">>,
                               <<"359884602998_608">>,1542291030157,
                               [{'Desc',<<"srv_23703">>,<<"text">>,
                                    <<"Delete">>,[],[]}],
                               [],23667,
                               [-1],
                               [],[],delete},
                           <<"message_delete">>}
** When Server state == {handler,roster_message,roster_message,system,roster,
                                 undefined,[],undefined}
** Reason for termination ==
** {{badmatch,[]},
    [{roster_message,notify,4,
                     [{file,"/home/nynja/depot/server/apps/roster/src/protocol/roster_message.erl"},
                      {line,321}]},
     {roster_message,proc,2,
                     [{file,"/home/nynja/depot/server/apps/roster/src/protocol/roster_message.erl"},
                      {line,282}]},
     {n2o_async,handle_info,2,
                [{file,"/home/nynja/depot/server/deps/n2o/src/n2o_async.erl"},
                 {line,46}]},
     {gen_server,try_dispatch,4,[{file,"gen_server.erl"},{line,616}]},
     {gen_server,handle_msg,6,[{file,"gen_server.erl"},{line,686}]},
     {proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,247}]}]}

=CRASH REPORT==== 15-Nov-2018::07:10:30 ===
  crasher:
    initial call: n2o_async:init/1
    pid: <0.30360.0>
    registered_name: []
    exception error: no match of right hand side value []
      in function  roster_message:notify/4 (/home/nynja/depot/server/apps/roster/src/protocol/roster_message.erl, line 321)
      in call from roster_message:proc/2 (/home/nynja/depot/server/apps/roster/src/protocol/roster_message.erl, line 282)
      in call from n2o_async:handle_info/2 (/home/nynja/depot/server/deps/n2o/src/n2o_async.erl, line 46)
      in call from gen_server:try_dispatch/4 (gen_server.erl, line 616)
      in call from gen_server:handle_msg/6 (gen_server.erl, line 686)
    ancestors: [roster,<0.649.0>]
    message_queue_len: 0
    messages: []
    links: [<0.650.0>]
    dictionary: []
    trap_exit: false
    status: running
    heap_size: 28690
    stack_size: 27
    reductions: 2672768
  neighbours:

=SUPERVISOR REPORT==== 15-Nov-2018::07:10:30 ===
     Supervisor: {local,roster}
     Context:    child_terminated
     Reason:     {{badmatch,[]},
                  [{roster_message,notify,4,
                       [{file,
                            "/home/nynja/depot/server/apps/roster/src/protocol/roster_message.erl"},
                        {line,321}]},
                   {roster_message,proc,2,
                       [{file,
                            "/home/nynja/depot/server/apps/roster/src/protocol/roster_message.erl"},
                        {line,282}]},
                   {n2o_async,handle_info,2,
                       [{file,
                            "/home/nynja/depot/server/deps/n2o/src/n2o_async.erl"},
                        {line,46}]},
                   {gen_server,try_dispatch,4,
                       [{file,"gen_server.erl"},{line,616}]},
                   {gen_server,handle_msg,6,
                       [{file,"gen_server.erl"},{line,686}]},
                   {proc_lib,init_p_do_apply,3,
                       [{file,"proc_lib.erl"},{line,247}]}]}
     Offender:   [{pid,<0.30360.0>},
                  {id,{system,roster_message}},
                  {mfargs,
                      {n2o_async,start_link,
                          [{handler,roster_message,roster_message,system,
                               roster,undefined,[],undefined}]}},
                  {restart_type,transient},
                  {shutdown,5000},
                  {child_type,worker}]


=PROGRESS REPORT==== 15-Nov-2018::07:10:30 ===
          supervisor: {local,roster}
             started: [{pid,<0.7720.1>},
                       {id,{system,roster_message}},
                       {mfargs,
                           {n2o_async,start_link,
                               [{handler,roster_message,roster_message,
                                    system,roster,undefined,[],undefined}]}},
                       {restart_type,transient},
                       {shutdown,5000},
                       {child_type,worker}]