Class not found exception after adding android library(.aar) in third party app

Ionic Framework ionic-v3
1

I have successfully generated Android library(.aar) from IONIC 3.20/Cordova application to reuse in the third party app. But while running the third party app, getting Class not found exception for all Cordova plugins.

build.gradle file in Third party app

allprojects {
    repositories {
        google()
        mavenCentral()
        jcenter() // Warning: this repository is going to shut down soon
        flatDir {
            dirs 'libs'
        }
    }
}
dependencies{
    implementation files('libs/android-debug.aar')
    implementation files('libs/cordova.jar')
    implementation fileTree(dir: 'libs', include: ['*.jar, *.aar'])
}

Below is the error getting from one of the cordova plugin which is using to communicate with server,

  java.lang.NoClassDefFoundError: Failed resolution of: Lokhttp3/OkUrlFactory;
    at com.github.kevinsawicki.http.OkConnectionFactory.create(OkConnectionFactory.java:17)
    at com.github.kevinsawicki.http.HttpRequest.createConnection(HttpRequest.java:1660)
    at com.github.kevinsawicki.http.HttpRequest.getConnection(HttpRequest.java:1680)
    at com.github.kevinsawicki.http.HttpRequest.header(HttpRequest.java:2230)
    at com.github.kevinsawicki.http.HttpRequest.contentType(HttpRequest.java:2714)
    at com.synconset.cordovahttp.CordovaHttp.setupDataSerializer(CordovaHttp.java:149)
    at com.synconset.cordovahttp.CordovaHttpPost.run(CordovaHttpPost.java:28)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
    at java.lang.Thread.run(Thread.java:923)
 Caused by: java.lang.ClassNotFoundException: Didn't find class "okhttp3.OkUrlFactory" on path: DexPathList[[dex file "/data/data/com.example.sdkproj/code_cache/.overlay/base.apk/classes.dex", zip file "/data/app/~~MQyA1J_PczNOony24qJ1LQ==/com.example.sdkproj-Xr3bQz70un4NU_FQoREVwQ==/base.apk"],nativeLibraryDirectories=[/data/app/~~MQyA1J_PczNOony24qJ1LQ==/com.example.sdkproj-Xr3bQz70un4NU_FQoREVwQ==/lib/arm64, /data/app/~~MQyA1J_PczNOony24qJ1LQ==/com.example.sdkproj-Xr3bQz70un4NU_FQoREVwQ==/base.apk!/lib/arm64-v8a, /system/lib64]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:20

Can any one tell the method to declare all the plugin dependencies?