Page disconnected with console log to check why

Hi, I installed the jitsi-meet welcome page showed but when I connected the page disconnected and please help to check the error which I have no idea where to begin:
Logger.js:154 2020-05-01T14:40:00.779Z [JitsiMeetJS.js] <Object.getGlobalOnErrorHandler>: UnhandledError: null Script: null Line: null Column: null StackTrace: Error: Focus error, retry after 4000
at u._allocateConferenceFocusError (moderator.js:446)
at moderator.js:373
at I.Handler.handler (strophe.umd.js:2716)
at I.Handler.run (strophe.umd.js:1875)
at strophe.umd.js:3157
at Object.forEachChild (strophe.umd.js:830)
at I.Connection._dataRecv (strophe.umd.js:3146)
at D.Bosh._onRequestStateChange (strophe.umd.js:5012)
s @ md5.js:1
getGlobalOnErrorHandler @ async.js:1
window.onerror @ app.bundle.min.js?v=4073:1
callErrorHandler @ lib-jitsi-meet.min.js?v=4073:1
u._allocateConferenceFocusError @ md5.js:1
(anonymous) @ md5.js:1
(anonymous) @ lib-jitsi-meet.min.js?v=4073:1
run @ lib-jitsi-meet.min.js?v=4073:1
(anonymous) @ lib-jitsi-meet.min.js?v=4073:1
forEachChild @ lib-jitsi-meet.min.js?v=4073:1
_dataRecv @ lib-jitsi-meet.min.js?v=4073:1
_onRequestStateChange @ lib-jitsi-meet.min.js?v=4073:1
XMLHttpRequest.send (async)
d @ lib-jitsi-meet.min.js?v=4073:1
_processRequest @ lib-jitsi-meet.min.js?v=4073:1
_throttledRequestHandler @ lib-jitsi-meet.min.js?v=4073:1
_onIdle @ lib-jitsi-meet.min.js?v=4073:1
_onIdle @ lib-jitsi-meet.min.js?v=4073:1
flush @ lib-jitsi-meet.min.js?v=4073:1
flush @ lib-jitsi-meet.min.js?v=4073:1
(anonymous) @ md5.js:1
u.allocateConferenceFocus @ md5.js:1
(anonymous) @ md5.js:1
setTimeout (async)
u._allocateConferenceFocusError @ md5.js:1
(anonymous) @ md5.js:1
(anonymous) @ lib-jitsi-meet.min.js?v=4073:1
run @ lib-jitsi-meet.min.js?v=4073:1
(anonymous) @ lib-jitsi-meet.min.js?v=4073:1
forEachChild @ lib-jitsi-meet.min.js?v=4073:1
_dataRecv @ lib-jitsi-meet.min.js?v=4073:1
_onRequestStateChange @ lib-jitsi-meet.min.js?v=4073:1
XMLHttpRequest.send (async)
d @ lib-jitsi-meet.min.js?v=4073:1
_processRequest @ lib-jitsi-meet.min.js?v=4073:1
_throttledRequestHandler @ lib-jitsi-meet.min.js?v=4073:1
_onIdle @ lib-jitsi-meet.min.js?v=4073:1
_onIdle @ lib-jitsi-meet.min.js?v=4073:1
flush @ lib-jitsi-meet.min.js?v=4073:1
flush @ lib-jitsi-meet.min.js?v=4073:1
(anonymous) @ md5.js:1
u.allocateConferenceFocus @ md5.js:1
(anonymous) @ md5.js:1
join @ md5.js:1
se.join @ md5.js:1
connect @ app.bundle.min.js?v=4073:126
(anonymous) @ app.bundle.min.js?v=4073:126
(anonymous) @ app.bundle.min.js?v=4073:126
Promise.then (async)
init @ app.bundle.min.js?v=4073:126
(anonymous) @ lodash.js:1
Promise.then (async)
(anonymous) @ lodash.js:1
(anonymous) @ app.bundle.min.js?v=4073:126
(anonymous) @ md5.js:1
(anonymous) @ lodash.js:1
(anonymous) @ index.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ index.js:11
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ index.js:1
(anonymous) @ lodash.js:1
(anonymous) @ md5.js:1
(anonymous) @ popper.js:25
(anonymous) @ lodash.js:1
(anonymous) @ md5.js:1
(anonymous) @ tslib.es6.js:17
(anonymous) @ tslib.es6.js:17
(anonymous) @ index.js:1
(anonymous) @ index.js:1
(anonymous) @ popper.js:25
(anonymous) @ md5.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ popper.js:25
(anonymous) @ lodash.js:1
(anonymous) @ index.js:1
(anonymous) @ index.js:1
(anonymous) @ lodash.js:1
(anonymous) @ index.js:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ index.js:1
(anonymous) @ tslib.es6.js:17
(anonymous) @ index.js:1
(anonymous) @ index.js:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ popper.js:25
(anonymous) @ lodash.js:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:210
(anonymous) @ tslib.es6.js:17
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
_start @ lodash.js:1
componentDidMount @ lodash.js:1
Gs @ app.bundle.min.js?v=4073:184
t.unstable_runWithPriority @ app.bundle.min.js?v=4073:192
fi @ app.bundle.min.js?v=4073:184
Ws @ app.bundle.min.js?v=4073:184
Ls @ app.bundle.min.js?v=4073:184
(anonymous) @ app.bundle.min.js?v=4073:184
t.unstable_runWithPriority @ app.bundle.min.js?v=4073:192
fi @ app.bundle.min.js?v=4073:184
gi @ app.bundle.min.js?v=4073:184
mi @ app.bundle.min.js?v=4073:184
Ps @ app.bundle.min.js?v=4073:184
enqueueSetState @ app.bundle.min.js?v=4073:184
w.setState @ app.bundle.min.js?v=4073:160
(anonymous) @ tslib.es6.js:17
_navigate @ tslib.es6.js:17
(anonymous) @ lodash.js:1
Promise.then (async)
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ index.js:11
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ index.js:1
(anonymous) @ lodash.js:1
(anonymous) @ md5.js:1
(anonymous) @ popper.js:25
(anonymous) @ lodash.js:1
(anonymous) @ md5.js:1
(anonymous) @ tslib.es6.js:17
(anonymous) @ tslib.es6.js:17
(anonymous) @ index.js:1
(anonymous) @ index.js:1
(anonymous) @ popper.js:25
(anonymous) @ md5.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ popper.js:25
(anonymous) @ lodash.js:1
(anonymous) @ index.js:1
(anonymous) @ index.js:1
(anonymous) @ lodash.js:1
(anonymous) @ index.js:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ index.js:1
(anonymous) @ tslib.es6.js:17
(anonymous) @ index.js:1
(anonymous) @ index.js:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ popper.js:25
(anonymous) @ lodash.js:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:210
(anonymous) @ tslib.es6.js:17
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
dispatch @ index.js:1
(anonymous) @ lodash.js:1
async function (async)
(anonymous) @ lodash.js:1
(anonymous) @ app.bundle.min.js?v=4073:126
(anonymous) @ md5.js:1
(anonymous) @ lodash.js:1
(anonymous) @ index.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ index.js:11
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ index.js:1
(anonymous) @ lodash.js:1
(anonymous) @ md5.js:1
(anonymous) @ popper.js:25
(anonymous) @ lodash.js:1
(anonymous) @ md5.js:1
(anonymous) @ tslib.es6.js:17
(anonymous) @ tslib.es6.js:17
(anonymous) @ index.js:1
(anonymous) @ index.js:1
(anonymous) @ popper.js:25
(anonymous) @ md5.js:1
(anonymous) @ lodash.js:1
(anonymous) @ lodash.js:1
(anonymous) @ popper.js:25
(anonymous) @ lodash.js:1
(anonymous) @ index.js:1
(anonymous) @ index.js:1
(anonymous) @ lodash.js:1
(anonymous) @ index.js:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ index.js:1
(anonymous) @ tslib.es6.js:17
(anonymous) @ index.js:1
(anonymous) @ index.js:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ popper.js:25
(anonymous) @ lodash.js:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:210
(anonymous) @ tslib.es6.js:17
(anonymous) @ app.bundle.min.js?v=4073:1
(anonymous) @ app.bundle.min.js?v=4073:1
_openURL @ lodash.js:1
(anonymous) @ lodash.js:1
Promise.then (async)
componentDidMount @ lodash.js:1
Gs @ app.bundle.min.js?v=4073:184
t.unstable_runWithPriority @ app.bundle.min.js?v=4073:192
fi @ app.bundle.min.js?v=4073:184
Ws @ app.bundle.min.js?v=4073:184
Ps @ app.bundle.min.js?v=4073:184
fc @ app.bundle.min.js?v=4073:184
hc @ app.bundle.min.js?v=4073:184
(anonymous) @ app.bundle.min.js?v=4073:184
Bs @ app.bundle.min.js?v=4073:184
_c @ app.bundle.min.js?v=4073:184
render @ app.bundle.min.js?v=4073:184
(anonymous) @ es6-promise.js:1
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Logger.js:154 2020-05-01T14:40:00.780Z [modules/xmpp/moderator.js]

Check your jicofo logs in /var/log/jitsi