App Crash happens

Stuck on this error? No way out?
I am using XCODE Version 11.
MobileRTC Version: 4.6.21666.0428

2020-05-02 13:05:55.718193+0500 FocusPoint[2972:77869] old data has cpoied done
2020-05-02 13:05:55.723004+0500 FocusPoint[2972:77869] [logging-persist] cannot open file at line 43353 of [378230ae7f]
2020-05-02 13:05:55.723202+0500 FocusPoint[2972:77869] [logging-persist] os_unix.c:43353: (0) open(/Users/NxGeN/Library/Developer/CoreSimulator/Devices/34CDFEC9-AB76-4D53-AD3C-4C846AA3D6D5/data/Containers/Data/Application/31C4C9BC-BF0E-43CB-A854-894B06971FAA/Documents/data/zoomus.tmp.db) - Undefined error: 0
2020-05-02 13:05:55.730022+0500 FocusPoint[2972:77869] [logging] table zoom_meet_participants already exists in “create table zoom_meet_participants (itemID integer64, name text, avatar text,snsID text, snsType integer, deviceID text,roleType integer);”
2020-05-02 13:05:55.732570+0500 FocusPoint[2972:77869] [logging] table zoom_kv already exists in “create table zoom_kv (key text, value text, section text);”
MobileRTC Version: Optional(“4.6.21666.0428”)
error was 0
meetingNO: 1231231234
2020-05-02 13:06:06.786372+0500 FocusPoint[2972:77869] -[FocusPoint.AppDelegate window]: unrecognized selector sent to instance 0x600003a4c460
2020-05-02 13:06:06.851906+0500 FocusPoint[2972:77869] *** Terminating app due to uncaught exception ‘NSInvalidArgumentException’, reason: ‘-[FocusPoint.AppDelegate window]: unrecognized selector sent to instance 0x600003a4c460’
*** First throw call stack:
(
0 CoreFoundation 0x00007fff23c7127e __exceptionPreprocess + 350
1 libobjc.A.dylib 0x00007fff513fbb20 objc_exception_throw + 48
2 CoreFoundation 0x00007fff23c91fd4 -[NSObject(NSObject) doesNotRecognizeSelector:] + 132
3 UIKitCore 0x00007fff480c0f17 -[UIResponder doesNotRecognizeSelector:] + 302
4 CoreFoundation 0x00007fff23c759f6 forwarding + 838
5 CoreFoundation 0x00007fff23c77f78 _CF_forwarding_prep_0 + 120
6 MobileRTC 0x0000000104a71a65 _Z16TermSBPTUIModulePN3Cmm22ICmmMessageQueueClientE + 812176
7 CoreFoundation 0x00007fff23b9b5bc CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER + 12
8 CoreFoundation 0x00007fff23b9aa35 _CFXRegistrationPost1 + 421
9 CoreFoundation 0x00007fff23b9a7a1 ___CFXNotificationPost_block_invoke + 193
10 CoreFoundation 0x00007fff23c988b3 -[_CFXNotificationRegistrar find:object:observer:enumerator:] + 1811
11 CoreFoundation 0x00007fff23b9a0f6 _CFXNotificationPost + 950
12 MobileRTC 0x00000001048d2e4b _Z10ios_getpidv + 251173
13 MobileRTC 0x0000000104f40d6c _Z16TermSBPTUIModulePN3Cmm22ICmmMessageQueueClientE + 5855127
14 MobileRTC 0x0000000104f2577e _Z16TermSBPTUIModulePN3Cmm22ICmmMessageQueueClientE + 5743017
15 MobileRTC 0x0000000104f1d095 _Z16TermSBPTUIModulePN3Cmm22ICmmMessageQueueClientE + 5708480
16 MobileRTC 0x0000000104f1bfc0 _Z16TermSBPTUIModulePN3Cmm22ICmmMessageQueueClientE + 5704171
17 MobileRTC 0x0000000104f1d7b1 _Z16TermSBPTUIModulePN3Cmm22ICmmMessageQueueClientE + 5710300
18 MobileRTC 0x0000000105058c2f _Z16TermSBPTUIModulePN3Cmm22ICmmMessageQueueClientE + 7001690
19 MobileRTC 0x0000000104a37d04 _Z16TermSBPTUIModulePN3Cmm22ICmmMessageQueueClientE + 575279
20 FocusPoint 0x00000001041585f5 $s10FocusPoint25MeetingZoomViewControllerC04joinC0yySSSgF + 2773
21 FocusPoint 0x0000000104157a4f $s10FocusPoint25MeetingZoomViewControllerC04joinC0yyypF + 1679
22 FocusPoint 0x0000000104157af0 $s10FocusPoint25MeetingZoomViewControllerC04joinC0yyypFTo + 80
23 UIKitCore 0x00007fff48093fff -[UIApplication sendAction:to:from:forEvent:] + 83
24 UIKitCore 0x00007fff47a6c00e -[UIControl sendAction:to:forEvent:] + 223
25 UIKitCore 0x00007fff47a6c358 -[UIControl _sendActionsForEvents:withEvent:] + 398
26 UIKitCore 0x00007fff47a6b2b7 -[UIControl touchesEnded:withEvent:] + 481
27 UIKitCore 0x00007fff480cebbf -[UIWindow _sendTouchesForEvent:] + 2604
28 UIKitCore 0x00007fff480d04c6 -[UIWindow sendEvent:] + 4596
29 UIKitCore 0x00007fff480ab53b -[UIApplication sendEvent:] + 356
30 UIKitCore 0x00007fff4812c71a __dispatchPreprocessedEventFromEventQueue + 6847
31 UIKitCore 0x00007fff4812f1e0 __handleEventQueueInternal + 5980
32 CoreFoundation 0x00007fff23bd4471 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 17
33 CoreFoundation 0x00007fff23bd439c __CFRunLoopDoSource0 + 76
34 CoreFoundation 0x00007fff23bd3b74 __CFRunLoopDoSources0 + 180
35 CoreFoundation 0x00007fff23bce87f __CFRunLoopRun + 1263
36 CoreFoundation 0x00007fff23bce066 CFRunLoopRunSpecific + 438
37 GraphicsServices 0x00007fff384c0bb0 GSEventRunModal + 65
38 UIKitCore 0x00007fff48092d4d UIApplicationMain + 1621
39 FocusPoint 0x0000000104147b4b main + 75
40 libdyld.dylib 0x00007fff5227ec25 start + 1
41 ??? 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)