Android build failed due to Mediation's banner ads

Questions & Answers
1

I’m trying to build an Android app, but the Mediation’s Banner Ads prevented led to build failed. It simply says it cannot find a symbol. Can anyone help me? Here’s the build log below:

CommandInvokationFailure: Gradle build failed. 
C:/Program Files/Unity/Hub/Editor/2019.4.40f1/Editor/Data/PlaybackEngines/AndroidPlayer\OpenJDK\bin\java.exe -classpath "C:\Gradle\gradle-5.6.4\lib\gradle-launcher-5.6.4.jar" org.gradle.launcher.GradleMain "-Dorg.gradle.jvmargs=-Xmx4096m" "assembleRelease"

stderr[
C:\Users\David Manoy\GT Challenge\Temp\gradleOut\unityLibrary\src\main\java\com\unity3d\mediation\BannerAd.java:11: error: cannot find symbol
import com.unity3d.mediation.BannerAdView;
                            ^
  symbol:   class BannerAdView
  location: package com.unity3d.mediation
C:\Users\David Manoy\GT Challenge\Temp\gradleOut\unityLibrary\src\main\java\com\unity3d\mediation\BannerAd.java:12: error: cannot find symbol
import com.unity3d.mediation.BannerAdViewSize;
                            ^
  symbol:   class BannerAdViewSize
  location: package com.unity3d.mediation
C:\Users\David Manoy\GT Challenge\Temp\gradleOut\unityLibrary\src\main\java\com\unity3d\mediation\BannerAd.java:13: error: cannot find symbol
import com.unity3d.mediation.IBannerAdViewListener;
                            ^
  symbol:   class IBannerAdViewListener
  location: package com.unity3d.mediation
C:\Users\David Manoy\GT Challenge\Temp\gradleOut\unityLibrary\src\main\java\com\unity3d\mediation\BannerAd.java:14: error: package com.unity3d.mediation.errors does not exist
import com.unity3d.mediation.errors.LoadError;
                                   ^
C:\Users\David Manoy\GT Challenge\Temp\gradleOut\unityLibrary\src\main\java\com\unity3d\mediation\BannerAd.java:18: error: cannot find symbol
    BannerAdView bannerAdView;
    ^
  symbol:   class BannerAdView
  location: class BannerAd
C:\Users\David Manoy\GT Challenge\Temp\gradleOut\unityLibrary\src\main\java\com\unity3d\mediation\BannerAd.java:22: error: cannot find symbol
    public BannerAd(Activity activity, String adUnitId, BannerAdViewSize size, IBannerAdViewListener bannerListener) {
                                                        ^
  symbol:   class BannerAdViewSize
  location: class BannerAd
C:\Users\David Manoy\GT Challenge\Temp\gradleOut\unityLibrary\src\main\java\com\unity3d\mediation\BannerAd.java:22: error: cannot find symbol
    public BannerAd(Activity activity, String adUnitId, BannerAdViewSize size, IBannerAdViewListener bannerListener) {
                                                                               ^
  symbol:   class IBannerAdViewListener
  location: class BannerAd
C:\Users\David Manoy\GT Challenge\Temp\gradleOut\unityLibrary\src\main\java\com\unity3d\mediation\BannerAd.java:65: error: cannot find symbol
    public AdState getAdState() {
           ^
  symbol:   class AdState
  location: class BannerAd
C:\Users\David Manoy\GT Challenge\Temp\gradleOut\unityLibrary\src\main\java\com\unity3d\mediation\BannerAd.java:25: error: cannot find symbol
        this.bannerAdView = new BannerAdView(activity);
                                ^
  symbol:   class BannerAdView
  location: class BannerAd
C:\Users\David Manoy\GT Challenge\Temp\gradleOut\unityLibrary\src\main\java\com\unity3d\mediation\BannerAd.java:30: error: cannot find symbol
        bannerAdView.setListener(new IBannerAdViewListener() {
                                     ^
  symbol:   class IBannerAdViewListener
  location: class BannerAd
Note: C:\Users\David Manoy\GT Challenge\Temp\gradleOut\unityLibrary\src\main\java\com\unity3d\player\UnityPlayerActivity.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
10 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':unityLibrary:compileReleaseJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 11s
Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8
]

I have tried to find an issue that caused the build process to fail, but I can’t seem to find the cause of the issue to fix. I know it is something to do with Mediation’s Billboard Ads. I expected the build process to be successful, but the build process actually failed.

2

i have fixed this, by instaling from package manadger “Ads Mediation”, and after removed the “(sorry cant find the name of this package, but it is not the advertisment( it contains 2 words, and its log saying thats you should use “ads mediation”))”