iOS device auth crash on v4.3.1.47201.0322

Meeting SDK
9
  1. Both of iPad and iPhone.
  2. Sample Code:

// AppDelegate.swift
let sharedInstance = Zoom() // this is a singleton

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        sharedInstance.auth()
}

/// Zoom.swift
class Zoom: NSObject {
    private func auth() {
        #if !arch(x86_64)
            MobileRTC.shared().setMobileRTCDomain(API.domain)
            let service = MobileRTC.shared().getAuthService()
            if service != nil {
                service?.clientKey = API.key
                service?.clientSecret = API.secret
                service?.delegate = self
                service?.sdkAuth()
            }
        #endif
    }
}

#if !arch(x86_64)
extension Zoom: MobileRTCAuthDelegate, MobileRTCMeetingServiceDelegate {
    func onMobileRTCAuthReturn(_ returnValue: MobileRTCAuthError) {
        switch returnValue {
        case MobileRTCAuthError_Success:
            MobileRTC.shared()?.getMeetingService()?.delegate = self
        default:
            break
        }
    }
    ///...
}
#endif
...