Multiple errors in production app

Plugin Version

google_mobile_ads: ^2.0.1

Steps to Reproduce

My live app reports some errors logs from crashlytics so i have no way to reproduce them locally everything works fine in debug but not in release.

I am sorry for how this issue looks like, it’s just very long to make an issue for all of them as they are all not reproductible in debug mode in my case.

Expected results:

Not seeing so many errors in my crashlytics dashboard.

Actual results:

Here is a preview of all the errors i am getting.

I will go in details in the Logs section. Note : for all the below logs, i have put the occurrence for each platform, of course the logs are slightly different from iOS and Android but they are close enough for me to gather them.

Besides i don’t know why some of the iOS errors are written in French while Android is all in English.

Logs

Networking

Android : 77 times iOS : 36 times

Non-fatal Exception: io.flutter.plugins.firebase.crashlytics.FlutterError: Vwa(code: 2, domain: com.google.android.gms.ads, message: Network error., responseInfo: Twa(responseId: null, mediationAdapterClassName: , adapterResponses: [])). Error thrown Reason : Network error. and code : 2.

Android : 66 times iOS : 0 times

Non-fatal Exception: io.flutter.plugins.firebase.crashlytics.FlutterError: Vwa(code: 0, domain: com.google.android.gms.ads, message: Error while connecting to ad server: Unable to resolve host "googleads.g.doubleclick.net": No address associated with hostname, responseInfo: Twa(responseId: null, mediationAdapterClassName: , adapterResponses: [])). Error thrown Reason : Error while connecting to ad server: Unable to resolve host "googleads.g.doubleclick.net": No address associated with hostname and code : 0.

Android : 3 times iOS : 0 times

Non-fatal Exception: io.flutter.plugins.firebase.crashlytics.FlutterError: Vwa(code: 0, domain: com.google.android.gms.ads, message: Error while connecting to ad server: unexpected end of stream on com.android.okhttp.Address@acefc12c, responseInfo: Twa(responseId: null, mediationAdapterClassName: , adapterResponses: [])). Error thrown Reason : Error while connecting to ad server: unexpected end of stream on com.android.okhttp.Address@acefc12c and code : 0.

Android : 3 times iOS : 6 times

Non-fatal Exception: io.flutter.plugins.firebase.crashlytics.FlutterError: Vwa(code: 0, domain: com.google.android.gms.ads, message: Error while connecting to ad server: Read error: ssl=0x7370df7208: Failure in SSL library, usually a protocol error
error:100000d7:SSL routines:OPENSSL_internal:SSL_HANDSHAKE_FAILURE (third_party/openssl/boringssl/src/ssl/ssl_lib.cc:971 0x753bff341c:0x00000000), responseInfo: Twa(responseId: null, mediationAdapterClassName: , adapterResponses: [])). Error thrown Reason : Error while connecting to ad server: Read error: ssl=0x7370df7208: Failure in SSL library, usually a protocol error
error:100000d7:SSL routines:OPENSSL_internal:SSL_HANDSHAKE_FAILURE (third_party/openssl/boringssl/src/ssl/ssl_lib.cc:971 0x753bff341c:0x00000000) and code : 0.

Code

Android : 127 times iOS : 0 times

Non-fatal Exception: io.flutter.plugins.firebase.crashlytics.FlutterError: Vwa(code: 0, domain: com.google.android.gms.ads, message: Unable to obtain a JavascriptEngine., responseInfo: Twa(responseId: null, mediationAdapterClassName: , adapterResponses: [])). Error thrown Reason : Unable to obtain a JavascriptEngine. and code : 0.

Android : 54 times iOS : 0 times

Non-fatal Exception: io.flutter.plugins.firebase.crashlytics.FlutterError: Vwa(code: 3, domain: com.google.android.gms.ads, message: No ad config., responseInfo: Twa(responseId: null, mediationAdapterClassName: , adapterResponses: [])). Error thrown Reason : No ad config. and code : 3.

Android : 0 times iOS : 37 times

LoadAdError(code: 9, domain: com.google.admob, message: Request Error: No ad to show from all configured ad networks., responseInfo: ResponseInfo(responseId: null, mediationAdapterClassName: null, adapterResponses: []))

Android : 6 times iOS : 0 times

Non-fatal Exception: io.flutter.plugins.firebase.crashlytics.FlutterError: Vwa(code: 0, domain: com.google.android.gms.ads, message: Internal error., responseInfo: Twa(responseId: CIu4hpzg-_kCFYSEhQod3IEIFQ, mediationAdapterClassName: , adapterResponses: [Uwa(adapterClassName: com.google.ads.mediation.admob.AdMobAdapter, latencyMillis: 60001), description: {
  "Adapter": "com.google.ads.mediation.admob.AdMobAdapter",
  "Latency": 60001,
  "Credentials": {},
  "Ad Error": {
    "Code": 0,
    "Message": "Internal error.",
    "Domain": "com.google.android.gms.ads",
    "Cause": "null"
  }
}, adUnitMapping: {}, adError: Swa(code: 0, domain: com.google.android.gms.ads, message: Internal error.))])). Error thrown Reason : Internal error. and code : 0.

Flutter doctor

[✓] Flutter (Channel stable, 3.3.1, on macOS 12.5.1 21G83 darwin-x64, locale fr-FR)
    • Flutter version 3.3.1 on channel stable at /Users/foxtom/Desktop/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 4f9d92fbbd (4 days ago), 2022-09-06 17:54:53 -0700
    • Engine revision 3efdf03e73
    • Dart version 2.18.0
    • DevTools version 2.15.0

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
    • Android SDK at /Users/foxtom/Library/Android/sdk
    • Platform android-33, build-tools 33.0.0
    • Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 13.4.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 13F100
    • CocoaPods version 1.11.3

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2021.2)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)

[✓] VS Code (version 1.71.0)
    • VS Code at /Users/foxtom/Desktop/Visual Studio Code.app/Contents
    • Flutter extension version 3.46.0

[✓] Connected device (4 available)
    • moto g 8 power (mobile) • 172.16.1.195:5555         • android-arm64  • Android 11 (API 30)
    • Now You See Me (mobile) • 00008020-001204401E78002E • ios            • iOS 15.6.1 19G82
    • macOS (desktop)         • macos                     • darwin-x64     • macOS 12.5.1 21G83 darwin-x64
    • Chrome (web)            • chrome                    • web-javascript • Google Chrome 105.0.5195.102

[✓] HTTP Host Availability
    • All required HTTP hosts are available

• No issues found!

[huycozy]

Do you know how to whitelist AdMob URLs from my flutter app ?

@Tom3652 I’m also not sure about this. I guess he used pi-hole DNS while testing the project locally (not from an end-user device) @sezaru Could you please share what you have completed as confirmed in https://github.com/googleads/googleads-mobile-flutter/issues/149#issuecomment-814525003?

I am not using a specific DNS or something as mentioned either as it’s simply users around the world using my live app 😕 but maybe they are on a wifi that is actually blocking requests somehow…

Maybe the end-user used a DNS similar to @sezaru’s or VPN as reported in https://github.com/googleads/googleads-mobile-flutter/issues/527#issuecomment-1064925394 that causes the ad to be blocked. You can follow up on #527 for further updates.

[huycozy]

Hi @Tom3652, thanks for responding and having a deep investigation.

• I also tried reproducing the issue when being in airplane mode and I got Internal error as below:

I/flutter (31107): BannerAd failedToLoad: LoadAdError(code: 0, domain: com.google.android.gms.ads, message: Internal error., responseInfo: ResponseInfo(responseId: null, mediationAdapterClassName: , adapterResponses: []))
I/flutter (31107): NativeAd failedToLoad: LoadAdError(code: 0, domain: com.google.android.gms.ads, message: Internal error., responseInfo: ResponseInfo(responseId: null, mediationAdapterClassName: , adapterResponses: []))
I/flutter (31107): AdManagerBannerAd failedToLoad: LoadAdError(code: 0, domain: com.google.android.gms.ads, message: Internal error., responseInfo: ResponseInfo(responseId: null, mediationAdapterClassName: , adapterResponses: []))

• With No ad config error, this is a known issue being tracked at https://github.com/googleads/googleads-mobile-flutter/issues/59, please follow up on it for further updates.

• With Unable to obtain a JavascriptEngine error, please see #149 and take a look at https://github.com/googleads/googleads-mobile-flutter/issues/149#issuecomment-814525003 that give a cause found by OP there.

• With some errors that show Error while connecting to ad server or Network error, the cause may be that the device does not have an internet connection or airplane mode case like above (I can’t conclude it right now)

If you can find out anything else, please provide it, it will be helpful for investigation. Thank you a lot!