[conference.js] <e.value>: CONFERENCE FAILED: conference.videobridgeNotAvailable

Hi:
I installed docker-jitsi-meet by readme Quick start

then, I start web server, chrome browser console display error:

Logger.js:125 [conference.js] <e.value>:  CONFERENCE FAILED: conference.videobridgeNotAvailable
o @ Logger.js:125
value @ conference.js:331
r.emit @ events.js:81
r.emit @ events.js:96
value @ ChatRoom.js:549
value @ strophe.emuc.js:103
run @ strophe.js:2556
(anonymous) @ strophe.js:3822
forEachChild @ strophe.js:1522
_dataRecv @ strophe.js:3810
_onRequestStateChange @ strophe.js:5559
XMLHttpRequest.send (async)
l @ strophe.js:5662
_processRequest @ strophe.js:5677
_throttledRequestHandler @ strophe.js:5823
_onIdle @ strophe.js:5455
_onIdle @ strophe.js:4467
flush @ strophe.js:3285
value @ ChatRoom.js:215
(anonymous) @ ChatRoom.js:174
d._allocateConferenceFocusSuccess @ moderator.js:493
(anonymous) @ moderator.js:374
(anonymous) @ strophe.js:3384
run @ strophe.js:2556
(anonymous) @ strophe.js:3822
forEachChild @ strophe.js:1522
_dataRecv @ strophe.js:3810
_onRequestStateChange @ strophe.js:5559
XMLHttpRequest.send (async)
l @ strophe.js:5662
_processRequest @ strophe.js:5677
_throttledRequestHandler @ strophe.js:5823
_onIdle @ strophe.js:5455
_onIdle @ strophe.js:4467
(anonymous) @ strophe.js:4473
setTimeout (async)
_onIdle @ strophe.js:4472
flush @ strophe.js:3285
d.allocateConferenceFocus @ moderator.js:381
(anonymous) @ ChatRoom.js:173
value @ ChatRoom.js:172
X.join @ JitsiConference.js:364
value @ conference.js:477
(anonymous) @ conference.js:779
(anonymous) @ conference.js:778
Promise.then (async)
init @ conference.js:726
(anonymous) @ actions.web.js:28
(anonymous) @ index.js:11
(anonymous) @ middleware.js:41
(anonymous) @ middleware.js:27
(anonymous) @ middleware.js:13
(anonymous) @ middleware.js:21
(anonymous) @ middleware.js:22
(anonymous) @ middleware.js:22
(anonymous) @ middleware.js:99
(anonymous) @ middleware.js:63
(anonymous) @ middleware.js:43
(anonymous) @ middleware.web.js:36
(anonymous) @ middleware.any.js:55
(anonymous) @ middleware.js:29
(anonymous) @ middleware.js:17
(anonymous) @ middleware.js:30
(anonymous) @ middleware.js:20
(anonymous) @ middleware.js:39
(anonymous) @ middleware.js:12
(anonymous) @ middleware.js:29
(anonymous) @ middleware.js:20
(anonymous) @ middleware.js:25
(anonymous) @ middleware.web.js:23
(anonymous) @ middleware.any.js:94
(anonymous) @ middleware.js:65
(anonymous) @ middleware.js:33
(anonymous) @ middleware.js:25
(anonymous) @ middleware.js:29
(anonymous) @ middleware.js:44
(anonymous) @ middleware.js:104
(anonymous) @ middleware.js:62
(anonymous) @ middleware.js:24
(anonymous) @ middleware.js:42
(anonymous) @ middleware.js:44
(anonymous) @ middleware.js:27
(anonymous) @ middleware.js:23
(anonymous) @ middleware.js:25
(anonymous) @ middleware.js:45
(anonymous) @ middleware.js:42
(anonymous) @ middleware.js:18
(anonymous) @ middleware.js:130
(anonymous) @ middleware.js:126
value @ Conference.js:276
value @ Conference.js:157
Na @ react-dom.production.min.js:228
Ta @ react-dom.production.min.js:220
Pa @ react-dom.production.min.js:219
Oa @ react-dom.production.min.js:216
Zi @ react-dom.production.min.js:214
enqueueSetState @ react-dom.production.min.js:134
w.setState @ react.production.min.js:13
n @ I18n.js:135
t @ I18n.js:147
(anonymous) @ EventEmitter.js:46
e.emit @ EventEmitter.js:45
(anonymous) @ i18next.js:162
(anonymous) @ i18next.js:265
(anonymous) @ i18next.js:281
t.load @ BackendConnector.js:183
(anonymous) @ i18next.js:215
t.load @ CacheConnector.js:40
t.loadResources @ i18next.js:214
r @ i18next.js:280
t.changeLanguage @ i18next.js:286
s @ i18next.js:159
setTimeout (async)
t.init @ i18next.js:171
(anonymous) @ i18next.js:68
n @ bootstrap:19
(anonymous) @ actionTypes.js:21
n @ bootstrap:19
(anonymous) @ actions.js:19
n @ bootstrap:19
(anonymous) @ actions.js:265
(anonymous) @ functions.js:97
n @ bootstrap:19
(anonymous) @ AnalyticsEvents.js:630
n @ bootstrap:19
(anonymous) @ index.js:1
(anonymous) @ actions.js:715
n @ bootstrap:19
(anonymous) @ toConsumableArray.js:8
n @ bootstrap:19
(anonymous) @ actions.js:5
(anonymous) @ actions.js:265
n @ bootstrap:19
(anonymous) @ index.js:3
n @ bootstrap:19
(anonymous) @ actions.js:20
n @ bootstrap:19
(anonymous) @ possibleConstructorReturn.js:16
n @ bootstrap:19
(anonymous) @ actions.js:17
n @ bootstrap:19
(anonymous) @ AuthHandler.js:1
(anonymous) @ AuthHandler.js:229
n @ bootstrap:19
(anonymous) @ connection.js:1
(anonymous) @ connection.js:189
n @ bootstrap:19
(anonymous) @ Tooltip.js:289
(anonymous) @ conference.js:2786
n @ bootstrap:19
(anonymous) @ withAnalyticsEvents.js:111
n @ bootstrap:19
(anonymous) @ bootstrap:83
(anonymous) @ bootstrap:83
Show 107 more frames
Logger.js:125 [JitsiMeetJS.js] <Object.getGlobalOnErrorHandler>:  UnhandledError: null Script: null Line: null Column: null StackTrace:  Error: Strophe: TypeError: Cannot read property 'removeModeratorIndicator' of null
    at Object.showModeratorIndicator (VideoLayout.js:568)
    at Object._.updateLocalRole (UI.js:406)
    at r.<anonymous> (conference.js:1778)
    at r.emit (events.js:84)
    at X.onLocalRoleChanged (JitsiConference.js:1396)
    at r.<anonymous> (JitsiConferenceEventManager.js:283)
    at r.emit (events.js:81)
    at t.value (ChatRoom.js:436)
    at s.value (strophe.emuc.js:103)
    at r.Handler.run (strophe.js:2556)
    at strophe.js:3822
    at Object.forEachChild (strophe.js:1522)
    at r.Connection._dataRecv (strophe.js:3810)
    at e.Bosh._onRequestStateChange (strophe.js:5559)
    at Object.i.Strophe.log (strophe.util.js:89)
    at Object.fatal (strophe.js:2093)
    at Object._handleError (strophe.js:1995)
    at r.Handler.run (strophe.js:2558)
    at strophe.js:3822
    at Object.forEachChild (strophe.js:1522)
    at r.Connection._dataRecv (strophe.js:3810)
    at e.Bosh._onRequestStateChange (strophe.js:5559)

next, I docker logs jvb’s CONTAINER ID, error follow:

I don’t know why, please give me help, thanks!