版本： 17.11 平台：ubuntu 16.04 有了mod\u muc配置，有时disco项目根本不加载。这是我用于disco项目的配置。这是我在撞车时发现的撞车日志

mod_muc:
  db_type: sql
  default_room_options:
    - allow_subscription: true
    - mam: true
  access_admin:
    - allow: admin
  access_create: muc_create
  access_persistent: muc_create
  history_size: 100
  max_rooms_discoitems: 1000
  max_user_conferences: 50
  max_users_presence: 50

此外，当加入相同的muc（以前可用）时，无法获得连接。如果我重新启动服务器，事情会很好地工作，并在某些时间后，muc s不来了
错误日志：

Stopping MUC room x@conference.host.com
2018-07-27 12:57:39.972 [error] <0.32056.26> gen_fsm <0.32056.26> in state normal_state terminated with reason: bad return value: ok
2018-07-27 12:57:39.972 [error] <0.32056.26>@p1_fsm:terminate:760 CRASH REPORT Process <0.32056.26> with 0 neighbours exited with reason: bad return value: ok in p1_fsm:terminate/8 line 760

 2018-07-30 05:12:12 =ERROR REPORT====

**State machine <0.9190.27> terminating 
**Last event in was {route,<<>>,{iq,<<"qM1F3-119">>,set,<<"en">>,{jid,<<"usr_name">>,<<"x.y.com">>,<<"1140">>,<<"usr_name">>,<<"x.y.com">>,<<"1140">>},{jid,<<"planet_discovery1532511384">>,<<"conference.x.y.com">>,<<>>,<<"planet_discovery1532511384">>,<<"conference.x.y.com">>,<<>>},[{xmlel,<<"query">>,[{<<"xmlns">>,<<"urn:xmpp:mam:2">>}],[{xmlel,<<"set">>,[{<<"xmlns">>,<<"http://jabber.org/protocol/rsm">>}],[{xmlel,<<"max">>,[],[{xmlcdata,<<"30">>}]},{xmlel,<<"after">>,[],[]}]},{xmlel,<<"x">>,[{<<"xmlns">>,<<"jabber:x:data">>},{<<"type">>,<<"submit">>}],[{xmlel,<<"field">>,[{<<"var">>,<<"FORM_TYPE">>},{<<"type">>,<<"hidden">>}],[{xmlel,<<"value">>,[],[{xmlcdata,<<"urn:xmpp:mam:2">>}]}]}]}]}],#{ip => {0,0,0,0,0,65535,46291,27829}}}}
**When State == normal_state
**    Data  == {state,<<"planet_discovery1532511384">>, 

 <<"conference.x.y.com">>,<<"x.y.com">>,{all,muc_create,[{allow, 
[{acl,admin}]}],muc_create},{jid,<<"planet_discovery1532511384">>,<<"conference.x.y.com">>,<<>>,<<"planet_discovery1532511384">>,<<"conference.x.y.com">>,<<>>},{config,<<"Planet Discovery">>,<<>>,true,true,true,anyone,true,true,false,true,true,true,false,true,true,true,true,false,<<>>,true,[moderator,participant,visitor],true,1800,200,false,<<>>,{0,nil},true},{dict,1,16,16,8,80,48,{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[]},{{[],[],[],[],[],[[{<<"usr_name">>,<<"x.y.com">>,<<"1140">>}|{x.y.com,{jid,<<"usr_name">>,<<"x.y.com">>,<<"1140">>,<<"usr_name">>,<<"x.y.com">>,<<"1140">>},<<"usr_name@x.y.com/1140">>,moderator,{presence,<<"qM1F3-116">>,available,<<"en">>,{jid,<<"usr_name">>,<<"x.y.com">>,<<"1140">>,<<"usr_name">>,<<"x.y.com">>,<<"1140">>},{jid,<<"planet_discovery1532511384">>,<<"conference.x.y.com">>,<<"usr_name@x.y.com/1140">>,<<"planet_discovery1532511384">>,<<"conference.x.y.com">>,<<"usr_name@x.y.com/1140">>},undefined,[],undefined,[{xmlel,<<"c">>,[{<<"xmlns">>,<<"http://jabber.org/protocol/caps">>},{<<"hash">>,<<"sha-1">>},{<<"node">>,<<"http://www.igniterealtime.org/projects/smack">>},{<<"ver">>,<<"p801v5l0jeGbLCy09wmWvQCQ7Ok=">>}],[]},{vcard_xupdate,{<<>>,<<>>},undefined}],#{ip => {0,0,0,0,0,65535,46291,27829}}}}]],[],[],[],[],[],[],[],[],[],[]}}},{dict,0,16,16,8,80,48,{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[]},{{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[]}}},{dict,0,16,16,8,80,48,{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[]},{{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[]}}},nil,{dict,0,16,16,8,80,48,{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[]},{{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[]}}},{dict,1,16,16,8,80,48,{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[]},{{[],[],[],[[<<"usr_name@x.y.com/1140">>,{<<"usr_name">>,<<"x.y.com">>,<<"1140">>}]],[],[],[],[],[],[],[],[],[],[],[],[]}}},{dict,3,16,16,8,80,48,{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[]},{{[],[],[],[],[],[],[],[[{<<"usr_name">>,<<"x.y.com">>,<<>>}|{owner,<<>>}]],[],[],[[{<<"miga8747b6">>,<<"x.y.com">>,<<>>}|{owner,<<>>}]],[],[],[],[[{<<"ruba32cc6e">>,<<"x.y.com">>,<<>>}|{owner,<<>>}]],[]}}},{lqueue,{{[],[]},0,unlimited},1000},[],<<>>,false,nil,none,undefined}

**Reason for termination = 
**{bad_return_value,ok}

2018-07-30 05:12:12 =CRASH REPORT====
crasher:
  initial call: mod_muc_room:init/1
  pid: <0.9190.27>
  registered_name: []
  exception exit: {{bad_return_value,ok},[{p1_fsm,terminate,8,[{file,"src/p1_fsm.erl"},{line,760}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,247}]}]}
  ancestors: ['mod_muc_x.y.com',ejabberd_gen_mod_sup,ejabberd_sup,<0.32330.26>]
  messages: []
  links: []
  dictionary: [{'$internal_queue_len',0}]
  trap_exit: true
  status: running
  heap_size: 6772
  stack_size: 27
  reductions: 3310
neighbours:
2018-07-30 12:41:56 =ERROR REPORT====