title: I am facing an issue to Google Sign in IN IOS 13.1
body: <h2>At the time for calling this (GIDSignIn.sharedInstance().signIn()) is Showing error ("reason: 'presentingViewController must be set.')</h2>
  
  <p>Full Error below</p>
  
  <blockquote>
    <p>2019-10-25 12:12:31.060880+0530[7575:70886] <strong>* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'presentingViewController must be set.'
    *</strong> First throw call stack:
    (
        0   CoreFoundation                      0x00007fff23baa1ee __exceptionPreprocess + 350
        1   libobjc.A.dylib                     0x00007fff50864b20 objc_exception_throw + 48
        2   CoreFoundation                      0x00007fff23baa02c +[NSException raise:format:]
     + 188
        3   LiveVideo                           0x000000010b2bb7e4 -[GIDSignIn signInWithOptions:]
     + 123
        4   LiveVideo                           0x000000010b2bb1b2 -[GIDSignIn signIn] + 64
        5   LiveVideo                           0x000000010b1c9390 $s9LiveVideo21ProfileViewControllerC12googleSignUpyyypF + 272
        6   LiveVideo                           0x000000010b1c9400 $s9LiveVideo21ProfileViewControllerC12googleSignUpyyypFTo + 80
        7   UIKitCore                           0x00007fff4757a082 -[UIApplication sendAction:to:from:forEvent:]
     + 83
        8   UIKitCore                           0x00007fff46f608e5 -[UIControl sendAction:to:forEvent:]
     + 223
        9   UIKitCore                           0x00007fff46f60c2f -[UIControl _sendActionsForEvents:withEvent:]
     + 398
        10  UIKitCore                           0x00007fff46f5fb8e -[UIControl touchesEnded:withEvent:]
     + 481
        11  UIKitCore                           0x00007fff475b4a31 -[UIWindow _sendTouchesForEvent:]
     + 2604
        12  UIKitCore                           0x00007fff475b6338 -[UIWindow sendEvent:]
     + 4596
        13  UIKitCore                           0x00007fff47591693 -[UIApplication sendEvent:]
     + 356
        14  UIKitCore                           0x00007fff47611e5a __dispatchPreprocessedEventFromEventQueue + 6847
        15  UIKitCore                           0x00007fff47614920 __handleEventQueueInternal + 5980
        16  CoreFoundation                      0x00007fff23b0d271 _CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION_ + 17
        17  CoreFoundation                      0x00007fff23b0d19c __CFRunLoopDoSource0 + 76
        18  CoreFoundation                      0x00007fff23b0c974 __CFRunLoopDoSources0 + 180
        19  CoreFoundation                      0x00007fff23b0767f __CFRunLoopRun + 1263
        20  CoreFoundation                      0x00007fff23b06e66 CFRunLoopRunSpecific + 438
        21  GraphicsServices                    0x00007fff38346bb0 GSEventRunModal + 65
        22  UIKitCore                           0x00007fff47578dd0 UIApplicationMain + 1621
        23  LiveVideo                           0x000000010b2b25ab main + 75
        24  libdyld.dylib                       0x00007fff516ecd29 start + 1
    )
    libc++abi.dylib: terminating with uncaught exception of type NSException
    (lldb) </p>
  </blockquote>