Error when building on Android: Unable to convert classes into dex format

Hi everyone, I'm new to unity and this really confuses me. I tried to build and run using Android and this keep on popping up. I've tried to search for duplicates but never seems to work. (Maybe I'm doing something wrong?)

Well long story short I tried to find duplicates and it did find some but the path was either "Temp" or "StagingArea" so I didn't know if it was right to delete them. I also searched for java or aar files.

Anothing thing is that some files go to my Onedrive, I don't know if that causes issues or not.

Spoiler: Console

CommandInvokationFailure: Unable to convert classes into dex format.
C:\Program Files\Java\jdk1.8.0_121\bin\java.exe -Xmx2048M -Dcom.android.sdkmanager.toolsdir="C:/Users/rielm/AppData/Local/Android/sdk\tools" -Dfile.encoding=UTF8 -jar "C:\Program Files\Unity\Editor\Data\PlaybackEngines\AndroidPlayer/Tools\sdktools.jar" -

stderr[
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/ads/BuildConfig;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/ads/IUnityAdsListener;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/ads/UnityAds;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/ads/UnityAds$1;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/ads/UnityAds$2;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/ads/UnityAds$FinishState;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/ads/UnityAds$PlacementState;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/ads/UnityAds$UnityAdsError;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/ads/adunit/AdUnitActivity;

UNEXPECTED TOP-LEVEL EXCEPTION:
java.lang.RuntimeException: Translation has been interrupted
at com.android.dx.command.dexer.Main.processAllFiles(Main.java:613)
at com.android.dx.command.dexer.Main.runMonoDex(Main.java:311)
at com.android.dx.command.dexer.Main.run(Main.java:277)
at com.android.dx.command.dexer.Main.main(Main.java:245)
at com.android.dx.command.Main.main(Main.java:106)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at SDKMain.main(SDKMain.java:129)
Caused by: java.lang.InterruptedException: Too many errors
at com.android.dx.command.dexer.Main.processAllFiles(Main.java:605)
... 9 more
]
stdout[
processing archive C:\Users\rielm\OneDrive\Documents\Project M3\Temp\StagingArea\android-libraries\GoogleAIDL\libs\.\classes.jar...
processing com/android/vending/billing/BuildConfig.class...
processing com/android/vending/billing/IInAppBillingService.class...
processing com/android/vending/billing/IInAppBillingService$Stub.class...
processing com/android/vending/billing/IInAppBillingService$Stub$Proxy.class...
processing archive C:\Users\rielm\OneDrive\Documents\Project M3\Temp\StagingArea\android-libraries\GoogleMobileAdsPlugin\libs\.\unity-plugin-library.jar...
processing com/google/unity/ads/Banner.class...
processing com/google/unity/ads/Banner$1.class...
processing com/google/unity/ads/Banner$2.class...
processing com/google/unity/ads/Banner$3.class...
processing com/google/unity/ads/Banner$4.class...
processing com/google/unity/ads/Banner$5.class...
processing com/google/unity/ads/Banner$6.class...
processing com/google/unity/ads/Banner$7.class...
processing com/google/unity/ads/BuildConfig.class...
processing com/google/unity/ads/CustomNativeAd.class...
processing com/google/unity/ads/CustomNativeAd$1.class...
processing com/google/unity/ads/CustomNativeAd$2.class...
processing com/google/unity/ads/Interstitial.class...
processing com/google/unity/ads/Interstitial$1.class...
processing com/google/unity/ads/Interstitial$1$1.class...
processing com/google/unity/ads/Interstitial$2.class...
processing com/google/unity/ads/Interstitial$3.class...
processing com/google/unity/ads/Interstitial$4.class...
processing com/google/unity/ads/Interstitial$5.class...
processing com/google/unity/ads/NativeAdLoader.class...
processing com/google/unity/ads/NativeAdLoader$1.class...
processing com/google/unity/ads/NativeAdLoader$2.class...
processing com/google/unity/ads/NativeAdLoader$3.class...
processing com/google/unity/ads/NativeAdLoader$3$1.class...
processing com/google/unity/ads/NativeAdLoader$3$2.class...
processing com/google/unity/ads/NativeAdLoader$3$3.class...
processing com/google/unity/ads/NativeAdLoader$4.class...
processing com/google/unity/ads/NativeExpressAd.class...
processing com/google/unity/ads/NativeExpressAd$1.class...
processing com/google/unity/ads/NativeExpressAd$2.class...
processing com/google/unity/ads/NativeExpressAd$3.class...
processing com/google/unity/ads/NativeExpressAd$4.class...
processing com/google/unity/ads/NativeExpressAd$5.class...
processing com/google/unity/ads/NativeExpressAd$6.class...
processing com/google/unity/ads/NativeExpressAd$7.class...
processing com/google/unity/ads/NativeExpressAd$8.class...
processing com/google/unity/ads/PluginUtils.class...
processing com/google/unity/ads/RewardBasedVideo.class...
processing com/google/unity/ads/RewardBasedVideo$1.class...
processing com/google/unity/ads/RewardBasedVideo$1$1.class...
processing com/google/unity/ads/RewardBasedVideo$2.class...
processing com/google/unity/ads/RewardBasedVideo$3.class...
processing com/google/unity/ads/UnityAdListener.class...
processing com/google/unity/ads/UnityCustomNativeAdListener.class...
processing com/google/unity/ads/UnityRewardBasedVideoAdListener.class...
processing archive C:\Users\rielm\OneDrive\Documents\Project M3\Temp\StagingArea\android-libraries\GooglePlay\libs\.\classes.jar...
processing com/unity/purchasing/googleplay/ActivityLauncher.class...
processing com/unity/purchasing/googleplay/BillingServiceManager.class...
processing com/unity/purchasing/googleplay/BillingServiceManager$1.class...
processing com/unity/purchasing/googleplay/BillingServiceManager$1$1.class...
processing com/unity/purchasing/googleplay/BillingServiceManager$1$2.class...
processing com/unity/purchasing/googleplay/BillingServiceManager$2.class...
processing com/unity/purchasing/googleplay/BillingServiceProcessor.class...
processing com/unity/purchasing/googleplay/BuildConfig.class...
processing com/unity/purchasing/googleplay/Consts.class...
processing com/unity/purchasing/googleplay/Consts$PurchaseState.class...
processing com/unity/purchasing/googleplay/Consts$ResponseCode.class...
processing com/unity/purchasing/googleplay/GooglePlayBillingUnAvailableException.class...
processing com/unity/purchasing/googleplay/GooglePlayPurchasing.class...
processing com/unity/purchasing/googleplay/GooglePlayPurchasing$1.class...
processing com/unity/purchasing/googleplay/GooglePlayPurchasing$2.class...
processing com/unity/purchasing/googleplay/GooglePlayPurchasing$3.class...
processing com/unity/purchasing/googleplay/GooglePlayPurchasing$4.class...
processing com/unity/purchasing/googleplay/GooglePlayPurchasing$5.class...
processing com/unity/purchasing/googleplay/GooglePlayPurchasing$6.class...
processing com/unity/purchasing/googleplay/GooglePlayPurchasing$7.class...
processing com/unity/purchasing/googleplay/IActivityLauncher.class...
processing com/unity/purchasing/googleplay/IBillingServiceManager.class...
processing com/unity/purchasing/googleplay/IabException.class...
processing com/unity/purchasing/googleplay/IabHelper.class...
processing com/unity/purchasing/googleplay/IabHelper$1.class...
processing com/unity/purchasing/googleplay/IabHelper$2.class...
processing com/unity/purchasing/googleplay/IabHelper$2$1.class...
processing com/unity/purchasing/googleplay/IabHelper$3.class...
processing com/unity/purchasing/googleplay/IabHelper$4.class...
processing com/unity/purchasing/googleplay/IabHelper$OnConsumeFinishedListener.class...
processing com/unity/purchasing/googleplay/IabHelper$OnConsumeMultiFinishedListener.class...
processing com/unity/purchasing/googleplay/IabHelper$OnIabPurchaseFinishedListener.class...
processing com/unity/purchasing/googleplay/IabHelper$OnIabSetupFinishedListener.class...
processing com/unity/purchasing/googleplay/IabHelper$QueryInventoryFinishedListener.class...
processing com/unity/purchasing/googleplay/IabResult.class...
processing com/unity/purchasing/googleplay/Inventory.class...
processing com/unity/purchasing/googleplay/Purchase.class...
processing com/unity/purchasing/googleplay/PurchaseActivity.class...
processing com/unity/purchasing/googleplay/PurchaseFailedEvent.class...
processing com/unity/purchasing/googleplay/SkuDetails.class...
processing archive C:\Users\rielm\OneDrive\Documents\Project M3\Temp\StagingArea\android-libraries\UnityAds\libs\.\classes.jar...
processing com/unity3d/ads/BuildConfig.class...
processing com/unity3d/ads/IUnityAdsListener.class...
processing com/unity3d/ads/UnityAds.class...
processing com/unity3d/ads/UnityAds$1.class...
processing com/unity3d/ads/UnityAds$2.class...
processing com/unity3d/ads/UnityAds$FinishState.class...
processing com/unity3d/ads/UnityAds$PlacementState.class...
processing com/unity3d/ads/UnityAds$UnityAdsError.class...
processing com/unity3d/ads/adunit/AdUnitActivity.class...
processing com/unity3d/ads/adunit/AdUnitError.class...
processing com/unity3d/ads/adunit/AdUnitEvent.class...
processing com/unity3d/ads/adunit/AdUnitOpen.class...
processing com/unity3d/ads/adunit/AdUnitSoftwareActivity.class...
processing com/unity3d/ads/api/AdUnit.class...
processing com/unity3d/ads/api/AdUnit$1.class...
processing com/unity3d/ads/api/AdUnit$2.class...
processing com/unity3d/ads/api/AdUnit$3.class...
processing com/unity3d/ads/api/AdUnit$4.class...
processing com/unity3d/ads/api/AdUnit$5.class...
processing com/unity3d/ads/api/Broadcast.class...
processing com/unity3d/ads/api/Cache.class...
processing com/unity3d/ads/api/Cache$1.class...
processing com/unity3d/ads/api/Connectivity.class...
processing com/unity3d/ads/api/DeviceInfo.class...
processing com/unity3d/ads/api/DeviceInfo$1.class...
processing com/unity3d/ads/api/DeviceInfo$StorageType.class...
processing com/unity3d/ads/api/Intent.class...
processing com/unity3d/ads/api/Intent$IntentError.class...
processing com/unity3d/ads/api/Listener.class...
processing com/unity3d/ads/api/Listener$1.class...
processing com/unity3d/ads/api/Listener$2.class...
processing com/unity3d/ads/api/Listener$3.class...
processing com/unity3d/ads/api/Listener$4.class...
processing com/unity3d/ads/api/Listener$5.class...
processing com/unity3d/ads/api/Placement.class...
processing com/unity3d/ads/api/Request.class...
processing com/unity3d/ads/api/Request$1.class...
processing com/unity3d/ads/api/Request$2.class...
processing com/unity3d/ads/api/Request$3.class...
processing com/unity3d/ads/api/Resolve.class...
processing com/unity3d/ads/api/Resolve$1.class...
processing com/unity3d/ads/api/Sdk.class...
processing com/unity3d/ads/api/Storage.class...
processing com/unity3d/ads/api/VideoPlayer.class...
processing com/unity3d/ads/api/VideoPlayer$1.class...
processing com/unity3d/ads/api/VideoPlayer$2.class...
processing com/unity3d/ads/api/VideoPlayer$3.class...
processing com/unity3d/ads/api/VideoPlayer$4.class...
processing com/unity3d/ads/api/VideoPlayer$5.class...
processing com/unity3d/ads/api/VideoPlayer$6.class...
processing com/unity3d/ads/broadcast/BroadcastError.class...
processing com/unity3d/ads/broadcast/BroadcastEvent.class...
processing com/unity3d/ads/broadcast/BroadcastEventReceiver.class...
processing com/unity3d/ads/broadcast/BroadcastMonitor.class...
processing com/unity3d/ads/cache/CacheDirectory.class...
processing com/unity3d/ads/cache/CacheError.class...
processing com/unity3d/ads/cache/CacheEvent.class...
processing com/unity3d/ads/cache/CacheThread.class...
processing com/unity3d/ads/cache/CacheThreadHandler.class...
processing com/unity3d/ads/cache/CacheThreadHandler$1.class...
processing com/unity3d/ads/configuration/Configuration.class...
processing com/unity3d/ads/configuration/ConfigurationFailure.class...
processing com/unity3d/ads/configuration/EnvironmentCheck.class...
processing com/unity3d/ads/configuration/InitializeThread.class...
processing com/unity3d/ads/configuration/InitializeThread$1.class...
processing com/unity3d/ads/configuration/InitializeThread$InitializeState.class...
processing com/unity3d/ads/configuration/InitializeThread$InitializeStateAdBlockerCheck.class...
processing com/unity3d/ads/configuration/InitializeThread$InitializeStateAdBlockerCheck$1.class...
processing com/unity3d/ads/configuration/InitializeThread$InitializeStateAdBlockerCheck$2.class...
processing com/unity3d/ads/configuration/InitializeThread$InitializeStateComplete.class...
processing com/unity3d/ads/configuration/InitializeThread$InitializeStateConfig.class...
processing com/unity3d/ads/configuration/InitializeThread$InitializeStateCreate.class...
processing com/unity3d/ads/configuration/InitializeThread$InitializeStateError.class...
processing com/unity3d/ads/configuration/InitializeThread$InitializeStateError$1.class...
processing com/unity3d/ads/configuration/InitializeThread$InitializeStateLoadCache.class...
processing com/unity3d/ads/configuration/InitializeThread$InitializeStateLoadWeb.class...
processing com/unity3d/ads/configuration/InitializeThread$InitializeStateNetworkError.class...
processing com/unity3d/ads/configuration/InitializeThread$InitializeStateReset.class...
processing com/unity3d/ads/configuration/InitializeThread$InitializeStateReset$1.class...
processing com/unity3d/ads/configuration/InitializeThread$InitializeStateRetry.class...
processing com/unity3d/ads/connectivity/ConnectivityChangeReceiver.class...
processing com/unity3d/ads/connectivity/ConnectivityEvent.class...
processing com/unity3d/ads/connectivity/ConnectivityMonitor.class...
processing com/unity3d/ads/connectivity/ConnectivityMonitor$1.class...
processing com/unity3d/ads/connectivity/ConnectivityNetworkCallback.class...
processing com/unity3d/ads/connectivity/IConnectivityListener.class...
processing com/unity3d/ads/device/AdvertisingId.class...
processing com/unity3d/ads/device/AdvertisingId$1.class...
processing com/unity3d/ads/device/AdvertisingId$GoogleAdvertisingInfo.class...
processing com/unity3d/ads/device/AdvertisingId$GoogleAdvertisingInfo$GoogleAdvertisingInfoBinder.class...
processing com/unity3d/ads/device/AdvertisingId$GoogleAdvertisingInfo$GoogleAdvertisingInfoBinder$GoogleAdvertisingInfoImplementation.class...
processing com/unity3d/ads/device/AdvertisingId$GoogleAdvertisingServiceConnection.class...
processing com/unity3d/ads/device/Device.class...
processing com/unity3d/ads/device/Device$1.class...
processing com/unity3d/ads/device/Device$MemoryInfoType.class...
processing com/unity3d/ads/device/DeviceError.class...
processing com/unity3d/ads/device/Storage.class...
processing com/unity3d/ads/device/StorageError.class...
processing com/unity3d/ads/device/StorageEvent.class...
processing com/unity3d/ads/device/StorageManager.class...
processing com/unity3d/ads/device/StorageManager$StorageType.class...
processing com/unity3d/ads/log/DeviceLog.class...
processing com/unity3d/ads/log/DeviceLog$1.class...
processing com/unity3d/ads/log/DeviceLog$UnityAdsLogLevel.class...
processing com/unity3d/ads/log/DeviceLogEntry.class...
processing com/unity3d/ads/log/DeviceLogLevel.class...
processing com/unity3d/ads/mediation/IUnityAdsExtendedListener.class...
processing com/unity3d/ads/metadata/MediationMetaData.class...
processing com/unity3d/ads/metadata/MetaData.class...
processing com/unity3d/ads/metadata/PlayerMetaData.class...
processing com/unity3d/ads/misc/Utilities.class...
processing com/unity3d/ads/misc/ViewUtilities.class...
processing com/unity3d/ads/placement/Placement.class...
processing com/unity3d/ads/properties/ClientProperties.class...
processing com/unity3d/ads/properties/SdkProperties.class...
processing com/unity3d/ads/request/IResolveHostListener.class...
processing com/unity3d/ads/request/IWebRequestListener.class...
processing com/unity3d/ads/request/IWebRequestProgressListener.class...
processing com/unity3d/ads/request/ResolveHostError.class...
processing com/unity3d/ads/request/ResolveHostEvent.class...
processing com/unity3d/ads/request/WebRequest.class...
processing com/unity3d/ads/request/WebRequest$RequestType.class...
processing com/unity3d/ads/request/WebRequestError.class...
processing com/unity3d/ads/request/WebRequestEvent.class...
processing<message truncated>

 

It worked, it was as a plugin. Thank you!