Erro do Google AdMob após a atualização para o Xcode 11 Swift 5.1

Como atualizei para o Xcode 11, os anúncios intersticiais no meu aplicativo não serão mais carregados. (Antes disso tudo funcionava bem. O aplicativo foi lançado na App Store. Agora, estamos criando uma versão atualizada do aplicativo)

Instalei o SDK do Google AdMobs via Cocoapods e atualizei para a versão mais recente. Ainda sem sucesso. (Segui todas as etapas do tutorial do Google, como implementar anúncios intersticiais) Estas são as mensagens de erro que recebo do console:

    2019-10-10 21:42:35.543249+0100 BuszZer[76592:876619] <Google> To get test ads on this device, set: request.testDevices = @[ kGADSimulatorID ];
    2019-10-10 21:42:35.599222+0100 BuszZer[76592:876796] [Client] Updating selectors failed with: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated.}
    2019-10-10 21:42:35.599426+0100 BuszZer[76592:876796] [Client] Updating selectors after delegate addition failed with: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated.}
    2019-10-10 21:42:35.599610+0100 BuszZer[76592:876787] [Client] Synchronous remote object proxy returned error: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated.}
    2019-10-10 21:42:35.600170+0100 BuszZer[76592:876787] [Client] Synchronous remote object proxy returned error: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated.}
    2019-10-10 21:42:35.600215+0100 BuszZer[76592:876796] [Client] Updating selectors failed with: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated.}
    2019-10-10 21:42:35.601185+0100 BuszZer[76592:876787] [Client] Synchronous remote object proxy returned error: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated.}
    2019-10-10 21:42:35.601435+0100 BuszZer[76592:876796] [Client] Updating selectors failed with: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated.}
    2019-10-10 21:42:35.608414+0100 BuszZer[76592:876619] [plugin] AddInstanceForFactory: No factory registered for id <CFUUID 0x60000360a1a0> F8BB1C28-BAE8-11D6-9C31-00039315CD46
    2019-10-10 21:42:35.610662+0100 BuszZer[76592:876789]  - <Google>[I-ACS025031] AdMob App ID changed. Original, new: (nil), ca-app-pub-9056820091768756~5451481231
    2019-10-10 21:42:35.611337+0100 BuszZer[76592:876789]  - <Google>[I-ACS023007] Analytics v.60102000 started
    2019-10-10 21:42:35.611517+0100 BuszZer[76592:876789]  - <Google>[I-ACS023008] To enable debug logging set the following application argument: -APMAnalyticsDebugEnabled (see https://help.apple.com/xcode/mac/8.0/#/dev3ec8a1cb4)

Alguém tem problemas ou experiências semelhantes e sabe como resolvê-los? Qualquer ajuda é apreciada. Muito obrigado!

Tente executar este comando em um terminal:

xcrun simctl spawn booted log config \
   --mode "level:off" \
   --subsystem com.apple.CoreTelephony