capacitor: Ionic + Capacitor - Cordova Plugins exception

Description of the problem:

Affected platform

• [ x] Android
• iOS
• electron
• web

OS of the development machine

• [x ] Windows
• macOS
• linux

Other information:

Capacitor version: 1.0.0

node version: 10.15.3 npm version: 6.9.0

Steps to reproduce: When I run my app, I see the following exceptions (and the plugins don’t work: AdMobFree and InAppPurchase v1)

V/Capacitor/Plugin: To native (Cordova plugin): callbackId: InAppBillingV31732914844, service: InAppBillingV3, action: init, actionArgs: []
W/System.err: java.lang.ClassNotFoundException: com.alexdisler.inapppurchases.InAppBillingV3
        at java.lang.Class.classForName(Native Method)
        at java.lang.Class.forName(Class.java:453)
        at java.lang.Class.forName(Class.java:378)
        at org.apache.cordova.PluginManager.instantiatePlugin(PluginManager.java:489)
        at org.apache.cordova.PluginManager.getPlugin(PluginManager.java:169)
        at org.apache.cordova.PluginManager.exec(PluginManager.java:122)
        at com.getcapacitor.MessageHandler.callCordovaPluginMethod(MessageHandler.java:73)
        at com.getcapacitor.MessageHandler.postMessage(MessageHandler.java:46)
        at android.os.MessageQueue.nativePollOnce(Native Method)
        at android.os.MessageQueue.next(MessageQueue.java:326)
        at android.os.Looper.loop(Looper.java:160)
        at android.os.HandlerThread.run(HandlerThread.java:65)
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    	... 12 more
    	Suppressed: java.io.IOException: No original dex files found for dex location
        at dalvik.system.DexFile.openDexFileNative(Native Method)
        at dalvik.system.DexFile.openDexFile(DexFile.java:354)
        at dalvik.system.DexFile.<init>(DexFile.java:101)
        at dalvik.system.DexFile.<init>(DexFile.java:75)
        at dalvik.system.DexPathList.loadDexFile(DexPathList.java:394)
        at dalvik.system.DexPathList.makeDexElements(DexPathList.java:354)
        at dalvik.system.DexPathList.<init>(DexPathList.java:164)
        at dalvik.system.BaseDexClassLoader.<init>(BaseDexClassLoader.java:74)
        at dalvik.system.BaseDexClassLoader.<init>(BaseDexClassLoader.java:65)
        at dalvik.system.PathClassLoader.<init>(PathClassLoader.java:64)
        at com.android.internal.os.ClassLoaderFactory.createClassLoader(ClassLoaderFactory.java:73)
        at com.android.internal.os.ClassLoaderFactory.createClassLoader(ClassLoaderFactory.java:88)
        at android.app.ApplicationLoaders.getClassLoader(ApplicationLoaders.java:74)
        at android.app.ApplicationLoaders.getClassLoader(ApplicationLoaders.java:40)
        at android.app.LoadedApk.createOrUpdateClassLoaderLocked(LoadedApk.java:727)
        at android.app.LoadedApk.getClassLoader(LoadedApk.java:810)
        at android.app.LoadedApk.getResources(LoadedApk.java:1032)
        at android.app.ContextImpl.createAppContext(ContextImpl.java:2345)
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5798)
        at android.app.ActivityThread.access$1100(ActivityThread.java:200)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1656)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:6718)
W/System.err:     at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
I/System.out: Error adding plugin com.alexdisler.inapppurchases.InAppBillingV3.
E/Capacitor: Post message error:
    java.lang.NullPointerException: Attempt to invoke virtual method 'void org.apache.cordova.CordovaPlugin.privateInitialize(java.lang.String, org.apache.cordova.CordovaInterface, org.apache.cordova.CordovaWebView, org.apache.cordova.CordovaPreferences)' on a null object reference
        at org.apache.cordova.PluginManager.getPlugin(PluginManager.java:171)
        at org.apache.cordova.PluginManager.exec(PluginManager.java:122)
        at com.getcapacitor.MessageHandler.callCordovaPluginMethod(MessageHandler.java:73)
        at com.getcapacitor.MessageHandler.postMessage(MessageHandler.java:46)
        at android.os.MessageQueue.nativePollOnce(Native Method)
        at android.os.MessageQueue.next(MessageQueue.java:326)
        at android.os.Looper.loop(Looper.java:160)
        at android.os.HandlerThread.run(HandlerThread.java:65)
V/Capacitor: callback: -1, pluginId: Console, methodName: log, methodData: {"level":"error","message":"ERROR {}"}
E/Capacitor/Plugin/Console: ERROR {}
E/Capacitor: Unable to inject Capacitor, Plugins won't work

Link to sample project: