ERROR TypeError: "this.allTimezones.find(...) is undefined"

[gkovacs81]

Hi,

I get this error message:

ERROR TypeError: "this.allTimezones.find(...) is undefined"
triggerChangeEvent http://192.168.0.2:4200/vendor.js:186903:37
set http://192.168.0.2:4200/vendor.js:186834:17
updateProp http://192.168.0.2:4200/vendor.js:83316:5
checkAndUpdateDirectiveInline http://192.168.0.2:4200/vendor.js:83079:19
checkAndUpdateNodeInline http://192.168.0.2:4200/vendor.js:84374:20
checkAndUpdateNode http://192.168.0.2:4200/vendor.js:84336:16
debugCheckAndUpdateNode http://192.168.0.2:4200/vendor.js:84970:19
debugCheckDirectivesFn http://192.168.0.2:4200/vendor.js:84930:13
View_ClockComponent_1 ng:///AppModule/ClockComponent.ngfactory.js:307:5
debugUpdateDirectives http://192.168.0.2:4200/vendor.js:84922:12
checkAndUpdateView http://192.168.0.2:4200/vendor.js:84318:5
callViewAction http://192.168.0.2:4200/vendor.js:84559:21
execEmbeddedViewsAction http://192.168.0.2:4200/vendor.js:84522:17
checkAndUpdateView http://192.168.0.2:4200/vendor.js:84319:5
callViewAction http://192.168.0.2:4200/vendor.js:84559:21
execComponentViewsAction http://192.168.0.2:4200/vendor.js:84501:13
checkAndUpdateView http://192.168.0.2:4200/vendor.js:84324:5
callViewAction http://192.168.0.2:4200/vendor.js:84559:21
execEmbeddedViewsAction http://192.168.0.2:4200/vendor.js:84522:17
checkAndUpdateView http://192.168.0.2:4200/vendor.js:84319:5
callViewAction http://192.168.0.2:4200/vendor.js:84559:21
execEmbeddedViewsAction http://192.168.0.2:4200/vendor.js:84522:17
checkAndUpdateView http://192.168.0.2:4200/vendor.js:84319:5
callViewAction http://192.168.0.2:4200/vendor.js:84559:21
execComponentViewsAction http://192.168.0.2:4200/vendor.js:84501:13
checkAndUpdateView http://192.168.0.2:4200/vendor.js:84324:5
callWithDebugContext http://192.168.0.2:4200/vendor.js:85188:22
debugCheckAndUpdateView http://192.168.0.2:4200/vendor.js:84890:12
detectChanges http://192.168.0.2:4200/vendor.js:82699:13
tick http://192.168.0.2:4200/vendor.js:79130:58
tick http://192.168.0.2:4200/vendor.js:79130:13
next http://192.168.0.2:4200/vendor.js:79021:99
invoke http://192.168.0.2:4200/polyfills.js:3268:17
onInvoke http://192.168.0.2:4200/vendor.js:78398:24
invoke http://192.168.0.2:4200/polyfills.js:3267:17
run http://192.168.0.2:4200/polyfills.js:3018:24
run http://192.168.0.2:4200/vendor.js:78312:16
next http://192.168.0.2:4200/vendor.js:79021:69
schedulerFn http://192.168.0.2:4200/vendor.js:74613:36
__tryOrUnsub http://192.168.0.2:4200/vendor.js:188656:13
next http://192.168.0.2:4200/vendor.js:188594:17
next http://192.168.0.2:4200/vendor.js:188537:9
next http://192.168.0.2:4200/vendor.js:188514:13
next http://192.168.0.2:4200/vendor.js:188279:25
emit http://192.168.0.2:4200/vendor.js:74597:54
checkStable http://192.168.0.2:4200/vendor.js:78367:13
onLeave http://192.168.0.2:4200/vendor.js:78434:5
onInvokeTask http://192.168.0.2:4200/vendor.js:78392:17
invokeTask http://192.168.0.2:4200/polyfills.js:3300:17
runTask http://192.168.0.2:4200/polyfills.js:3068:28
invokeTask http://192.168.0.2:4200/polyfills.js:3376:24
invoke http://192.168.0.2:4200/polyfills.js:3365:28
timer http://192.168.0.2:4200/polyfills.js:4934:17
ClockComponent.html:42:10
View_ClockComponent_1
ClockComponent.html:42:10
./node_modules/@angular/core/fesm5/core.js/DebugContext.prototype.logError
core.js:24041
./node_modules/@angular/core/fesm5/core.js/ErrorHandler.prototype.handleError
core.js:15762
./node_modules/@angular/core/fesm5/core.js/ApplicationRef.prototype.tick/<
core.js:18028:54
./node_modules/zone.js/dist/zone.js/</ZoneDelegate.prototype.invoke
zone.js:388
./node_modules/zone.js/dist/zone.js/</Zone.prototype.run
zone.js:138
./node_modules/@angular/core/fesm5/core.js/NgZone.prototype.runOutsideAngular
core.js:17248
./node_modules/@angular/core/fesm5/core.js/ApplicationRef.prototype.tick
core.js:18028
next/<
core.js:17912:97
./node_modules/zone.js/dist/zone.js/</ZoneDelegate.prototype.invoke
zone.js:388
onInvoke
core.js:17289
./node_modules/zone.js/dist/zone.js/</ZoneDelegate.prototype.invoke
zone.js:387
./node_modules/zone.js/dist/zone.js/</Zone.prototype.run
zone.js:138
./node_modules/@angular/core/fesm5/core.js/NgZone.prototype.run
core.js:17203
next
core.js:17912:67
./node_modules/@angular/core/fesm5/core.js/EventEmitter.prototype.subscribe/schedulerFn<
core.js:13504:34
./node_modules/rxjs/_esm5/internal/Subscriber.js/SafeSubscriber.prototype.__tryOrUnsub
Subscriber.js:196
./node_modules/rxjs/_esm5/internal/Subscriber.js/SafeSubscriber.prototype.next
Subscriber.js:134
./node_modules/rxjs/_esm5/internal/Subscriber.js/Subscriber.prototype._next
Subscriber.js:77
./node_modules/rxjs/_esm5/internal/Subscriber.js/Subscriber.prototype.next
Subscriber.js:54
./node_modules/rxjs/_esm5/internal/Subject.js/Subject.prototype.next
Subject.js:47
./node_modules/@angular/core/fesm5/core.js/EventEmitter.prototype.emit
core.js:13488:52
checkStable
core.js:17258
onLeave
core.js:17325
onInvokeTask
core.js:17283
./node_modules/zone.js/dist/zone.js/</ZoneDelegate.prototype.invokeTask
zone.js:420
./node_modules/zone.js/dist/zone.js/</Zone.prototype.runTask
zone.js:188
./node_modules/zone.js/dist/zone.js/</ZoneTask.invokeTask
zone.js:496
ZoneTask/this.invoke
zone.js:485
timer

The module works fine on every other systems, I see this error only on my android phone with Firefox browser. (Desktop Chrome/Firefox OK, phone Chrome OK.)

Could you please help me how can I solve this issue?
Let me know if you need info!

Thanks