incompatible: @ionic-native/admob-pro cordova-generic-ad.jar does not exist. · Issue #1101

Build Failed Error:

org.gradle.initialization.ReportedException: org.gradle.internal.exceptions.LocationAwareException: Could not resolve all files for configuration ':app:debugCompileClasspath'.
        at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:145)
	at org.gradle.initialization.DefaultGradleLauncher.executeTasks(DefaultGradleLauncher.java:115)
	at org.gradle.internal.invocation.GradleBuildController$1.call(GradleBuildController.java:78)
Caused by: org.gradle.internal.exceptions.LocationAwareException: Could not resolve all files for configuration ':app:debugCompileClasspath'.
	at org.gradle.initialization.DefaultExceptionAnalyser.transform(DefaultExceptionAnalyser.java:74)
	at org.gradle.initialization.MultipleBuildFailuresExceptionAnalyser.transform(MultipleBuildFailuresExceptionAnalyser.java:47)
Caused by: org.gradle.api.artifacts.transform.ArtifactTransformException: Failed to transform file 'cordova-generic-ad.jar' to match attributes {artifactType=processed-jar} using transform IdentityTransform
	at org.gradle.api.internal.artifacts.transform.UserCodeBackedTransformer.transform(UserCodeBackedTransformer.java:89)
	at org.gradle.api.internal.artifacts.transform.ChainedTransformer.transform(ChainedTransformer.java:36)
	at org.gradle.api.internal.artifacts.transform.TransformFileOperation.run(TransformFileOperation.java:40)
Caused by: org.gradle.api.InvalidUserDataException: Transform output file C:\XPlatform\grevocabulary\android\app\libs\cordova-generic-ad.jar does not exist.
	at org.gradle.api.internal.artifacts.transform.TransformArtifactsAction.apply(TransformArtifactsAction.java:52)
	at org.gradle.api.internal.artifacts.transform.TransformArtifactsAction.apply(TransformArtifactsAction.java:29)
Config.xml
.....
<plugin name="cordova-plugin-admobpro" spec="^2.35.3" />
.....
package.json
"dependencies": {
    .................
    "cordova-plugin-admobpro": "^2.35.3",
    .................
Environment Information
Ionic:
ionic (Ionic CLI)             : 4.6.0 (C:\Users\Rahadur\AppData\Roaming\npm\node_modules\ionic)
Ionic Framework               : @ionic/angular 4.0.0-beta.17                                   
@angular-devkit/build-angular : 0.10.7                                                         
@angular-devkit/schematics    : 7.0.7                                                          
@angular/cli                  : 7.0.7                                                          
@ionic/angular-toolkit        : 1.2.2    
Cordova:
cordova (Cordova CLI) : 8.0.0                                                                  
Cordova Platforms     : none                                                                   
Cordova Plugins       : no whitelisted plugins (4 plugins total)   
System:
Android SDK Tools : 26.1.1 (C:\Android\android-sdk)                                            
NodeJS            : v10.5.0 (C:\Program Files\nodejs\node.exe)                                 
npm               : 6.5.0                                                                      
OS                : Windows 10
          Sadly we can't fix this.

The problem is the dependency plugin cordova-plugin-extension, it has a gradle file at src/android/rjfun-libs.gradle which indicates Cordova to compile the cordova-generic-ad.jar, but doing that makes it search in a relative place instead of in the right place.
Capacitor already compiles the .jar files that are on the right place, so what that gradle file does is not really needed, what you can do is to delete the content of node_modules/cordova-plugin-extension/src/android/rjfun-libs.gradle as workaround.