Unhandled Promise Rejection - on iOS only

[Anytram]

Hi,
I get following message when I try to open chat sometimes:

2021-09-21 08:00:08.169344+0200 mindleap[5858:977051] [javascript] Possible Unhandled Promise Rejection (id: 0):
Error: Forbidden
construct@[native code]
_construct@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:28735:28
Wrapper@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:28684:25
construct@[native code]
_createSuperInternal@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:294893:294
TwilsockError@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:294909:25
construct@[native code]
_createSuperInternal@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:296633:294
TwilsockUpstreamError@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:296653:26
actualSend$@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:296580:72
tryCatch@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:1446:23
invoke@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:1616:32
tryCatch@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:1446:23
invoke@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:1518:30
/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:1528:21
tryCallOne@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:6389:16
/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:6490:27
_callTimer@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:31006:17
_callImmediatesPass@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:31045:17
callImmediates@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:31262:33
__callImmediates@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:5719:35
/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:5505:34
__guard@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:5702:15
flushedQueue@/private/var/containers/Bundle/Application/6CBB391E-A470-45EE-AD2A-B0D520AA93D9/mindleap.app/main.jsbundle:5504:21
flushedQueue@[native code]
callFunctionReturnFlushedQueue@[native code]

I determined that it occurs when my app tries to open channel:

		const channel: Channel = await chatClient.getChannelBySid(
			twilioPar.twilioChatChannelSid
		);

I also checked and my twilioPar is not null or undefined and seems to be correct. My client also exists.
This whole bug seems pretty random thought.