Cannot Convert Classes to dex format

I understand others have had the same issue and already posted an explanation for this but I cant figure out what is wrong, I have reimported the entire project to no avail. Here is the error. I am using admob and recently removed unity ads from the package manager.

 CommandInvokationFailure: Unable to convert classes into dex format.
 C:/Program Files/Java/jdk1.8.0_131\bin\java.exe -Xmx2048M -Dcom.android.sdkmanager.toolsdir="C:/Users/-oof-/AppData/Local/Android/sdk\tools" -Dfile.encoding=UTF8 -jar "D:\\Unity 2018.1\2018.2.14f1\Editor\Data\PlaybackEngines\AndroidPlayer/Tools\sdktools.jar" -
 
 stderr[
 
 PARSE ERROR:
 unsupported class file version 52.0
 ...while parsing bitter/jnibridge/JNIBridge.class
 1 error; aborting
 ]
 stdout[
 processing archive D:\Game\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 D:\Game\Temp\StagingArea\android-libraries\GoogleMobileAdsPlugin\libs\.\unity-plugin-library.jar...
 processing com/google/unity/BuildConfig.class...
 processing com/google/unity/ads/AdNetworkExtras.class...
 processing com/google/unity/ads/Banner.class...
 processing com/google/unity/ads/Banner$1.class...
 processing com/google/unity/ads/Banner$10.class...
 processing com/google/unity/ads/Banner$11.class...
 processing com/google/unity/ads/Banner$12.class...
 processing com/google/unity/ads/Banner$13.class...
 processing com/google/unity/ads/Banner$2.class...
 processing com/google/unity/ads/Banner$3.class...
 processing com/google/unity/ads/Banner$3$1.class...
 processing com/google/unity/ads/Banner$3$2.class...
 processing com/google/unity/ads/Banner$3$3.class...
 processing com/google/unity/ads/Banner$3$4.class...
 processing com/google/unity/ads/Banner$3$5.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/Banner$8.class...
 processing com/google/unity/ads/Banner$9.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$1$1$1.class...
 processing com/google/unity/ads/Interstitial$1$1$2.class...
 processing com/google/unity/ads/Interstitial$1$1$3.class...
 processing com/google/unity/ads/Interstitial$1$1$4.class...
 processing com/google/unity/ads/Interstitial$1$1$5.class...
 processing com/google/unity/ads/Interstitial$2.class...
 processing com/google/unity/ads/Interstitial$3.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/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$1$1$1.class...
 processing com/google/unity/ads/RewardBasedVideo$1$1$2.class...
 processing com/google/unity/ads/RewardBasedVideo$1$1$3.class...
 processing com/google/unity/ads/RewardBasedVideo$1$1$4.class...
 processing com/google/unity/ads/RewardBasedVideo$1$1$5.class...
 processing com/google/unity/ads/RewardBasedVideo$1$1$6.class...
 processing com/google/unity/ads/RewardBasedVideo$1$1$7.class...
 processing com/google/unity/ads/RewardBasedVideo$1$1$8.class...
 processing com/google/unity/ads/RewardBasedVideo$2.class...
 processing com/google/unity/ads/RewardBasedVideo$3.class...
 processing com/google/unity/ads/RewardBasedVideo$4.class...
 processing com/google/unity/ads/UnityAdListener.class...
 processing com/google/unity/ads/UnityAdLoaderListener.class...
 processing com/google/unity/ads/UnityRewardBasedVideoAdListener.class...
 processing archive D:\Unity Games\Orbz v2 LWSRP\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/GooglePlayPurchasing$8.class...
 processing com/unity/purchasing/googleplay/GooglePlayPurchasing$Features.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$3$1.class...
 processing com/unity/purchasing/googleplay/IabHelper$4.class...
 processing com/unity/purchasing/googleplay/IabHelper$5.class...
 processing com/unity/purchasing/googleplay/IabHelper$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 com/unity/purchasing/googleplay/VRPurchaseActivity.class...
 processing archive D:\Unity Games\Orbz v2 LWSRP\Temp\StagingArea\android-libraries\android.arch.lifecycle.runtime-1.0.0\libs\.\classes.jar...
 processing android/arch/lifecycle/BuildConfig.class...
 processing android/arch/lifecycle/LifecycleRegistry.class...
 processing android/arch/lifecycle/LifecycleRegistry$1.class...
 processing android/arch/lifecycle/LifecycleRegistry$ObserverWithState.class...
 processing android/arch/lifecycle/LifecycleRegistryOwner.class...
 processing android/arch/lifecycle/ReportFragment.class...
 processing android/arch/lifecycle/ReportFragment$ActivityInitializationListener.class...
 processing archive D:\Unity Games\Orbz v2 LWSRP\Temp\StagingArea\android-libraries\com.android.support.customtabs-26.1.0\libs\.\classes.jar...
 processing android/support/customtabs/BuildConfig.class...
 processing android/support/customtabs/CustomTabsCallback.class...
 processing android/support/customtabs/CustomTabsClient.class...
 processing android/support/customtabs/CustomTabsClient$1.class...
 processing android/support/customtabs/CustomTabsClient$2.class...
 processing android/support/customtabs/CustomTabsClient$2$1.class...
 processing android/support/customtabs/CustomTabsClient$2$2.class...
 processing android/support/customtabs/CustomTabsClient$2$3.class...
 processing android/support/customtabs/CustomTabsClient$2$4.class...
 processing android/support/customtabs/CustomTabsIntent.class...
 processing android/support/customtabs/CustomTabsIntent$1.class...
 processing android/support/customtabs/CustomTabsIntent$Builder.class...
 processing android/support/customtabs/CustomTabsService.class...
 processing android/support/customtabs/CustomTabsService$1.class...
 processing android/support/customtabs/CustomTabsService$1$1.class...
 processing android/support/customtabs/CustomTabsService$Result.class...
 processing android/support/customtabs/CustomTabsServiceConnection.class...
 processing android/support/customtabs/CustomTabsServiceConnection$1.class...
 processing android/support/customtabs/CustomTabsSession.class...
 processing android/support/customtabs/CustomTabsSessionToken.class...
 processing android/support/customtabs/CustomTabsSessionToken$1.class...
 processing android/support/customtabs/ICustomTabsCallback.class...
 processing android/support/customtabs/ICustomTabsCallback$Stub.class...
 processing android/support/customtabs/ICustomTabsCallback$Stub$Proxy.class...
 processing android/support/customtabs/ICustomTabsService.class...
 processing android/support/customtabs/ICustomTabsService$Stub.class...
 processing android/support/customtabs/ICustomTabsService$Stub$Proxy.class...
 processing android/support/customtabs/IPostMessageService.class...
 processing android/support/customtabs/IPostMessageService$Stub.class...
 processing android/support/customtabs/IPostMessageService$Stub$Proxy.class...
 processing android/support/customtabs/PostMessageService.class...
 processing android/support/customtabs/PostMessageService$1.class...
 processing android/support/customtabs/PostMessageServiceConnection.class...
 processing archive D:\Unity Games\Orbz v2 LWSRP\Temp\StagingArea\android-libraries\com.android.support.support-compat-26.1.0\libs\.\classes.jar...
 processing android/support/compat/BuildConfig.class...
 processing android/support/v4/accessibilityservice/AccessibilityServiceInfoCompat.class...
 processing android/support/v4/accessibilityservice/AccessibilityServiceInfoCompat$AccessibilityServiceInfoApi16Impl.class...
 processing android/support/v4/accessibilityservice/AccessibilityServiceInfoCompat$AccessibilityServiceInfoApi18Impl.class...
 processing android/support/v4/accessibilityservice/AccessibilityServiceInfoCompat$AccessibilityServiceInfoBaseImpl.class...
 processing android/support/v4/app/ActivityCompat.class...
 processing android/support/v4/app/ActivityCompat$1.class...
 processing android/support/v4/app/ActivityCompat$OnRequestPermissionsResultCallback.class...
 processing android/support/v4/app/ActivityCompat$RequestPermissionsRequestCodeValidator.class...
 processing android/support/v4/app/ActivityCompat$SharedElementCallback21Impl.class...
 processing android/support/v4/app/ActivityCompat$SharedElementCallback23Impl.class...
 processing android/support/v4/app/ActivityCompat$SharedElementCallback23Impl$1.class...
 processing android/support/v4/app/ActivityManagerCompat.class...
 processing android/support/v4/app/ActivityOptionsCompat.class...
 processing android/support/v4/app/ActivityOptionsCompat$ActivityOptionsCompatApi16Impl.class...
 processing android/support/v4/app/ActivityOptionsCompat$ActivityOptionsCompatApi23Impl.class...
 processing android/support/v4/app/ActivityOptionsCompat$ActivityOptionsCompatApi24Impl.class...
 processing android/support/v4/app/AlarmManagerCompat.class...
 processing android/support/v4/app/AppOpsManagerCompat.class...
 processing android/support/v4/app/BundleCompat.class...
 processing android/support/v4/app/BundleCompat$BundleCompatBaseImpl.class...
 processing android/support/v4/app/BundleUtil.class...
 processing android/support/v4/app/INotificationSideChannel.class...
 processing android/support/v4/app/INotificationSideChannel$Stub.class...
 processing android/support/v4/app/INotificationSideChannel$Stub$Proxy.class...
 processing android/support/v4/app/JobIntentService.class...
 processing android/support/v4/app/JobIntentService$CommandProcessor.class...
 processing android/support/v4/app/JobIntentService$CompatJobEngine.class...
 processing android/support/v4/app/JobIntentService$CompatWorkEnqueuer.class...
 processing android/support/v4/app/JobIntentService$CompatWorkItem.class...
 processing android/support/v4/app/JobIntentService$GenericWorkItem.class...
 processing android/support/v4/app/JobIntentService$JobServiceEngineImpl.class...
 processing android/support/v4/app/JobIntentService$JobServiceEngineImpl$WrapperWorkItem.class...
 processing android/support/v4/app/JobIntentService$JobWorkEnqueuer.class...
 processing android/support/v4/app/JobIntentService$WorkEnqueuer.class...
 processing android/support/v4/app/NotificationBuilderWithActions.class...
 processing android/support/v4/app/NotificationBuilderWithBuilderAccessor.class...
 processing android/support/v4/app/NotificationCompat.class...
 processing android/support/v4/app/NotificationCompat$Action.class...
 processing android/support/v4/app/NotificationCompat$Action$1.class...
 processing android/support/v4/app/NotificationCompat$Action$Builder.class...
 processing android/support/v4/app/NotificationCompat$Action$Extender.class...
 processing android/support/v4/app/NotificationCompat$Action$WearableExtender.class...
 processing android/support/v4/app/NotificationCompat$BadgeIconType.class...
 processing android/support/v4/app/NotificationCompat$BigPictureStyle.class...
 processing android/support/v4/app/NotificationCompat$BigTextStyle.class...
 processing android/support/v4/app/NotificationCompat$Builder.class...
 processing android/support/v4/app/NotificationCompat$BuilderExtender.class...
 processing android/support/v4/app/NotificationCompat$CarExtender.class...
 processing android/support/v4/app/NotificationCompat$CarExtender$UnreadConversation.class...
 processing android/support/v4/app/NotificationCompat$CarExtender$UnreadConversation$1.class...
 processing android/support/v4/app/NotificationCompat$CarExtender$UnreadConversation$Builder.class...
 processing android/support/v4/app/NotificationCompat$DecoratedCustomViewStyle.class...
 processing android/support/v4/app/NotificationCompat$Extender.class...
 processing android/support/v4/app/NotificationCompat$InboxStyle.class...
 processing android/support/v4/app/NotificationCompat$MessagingStyle.class...
 processing android/support/v4/app/NotificationCompat$MessagingStyle$Message.class...
 processing android/support/v4/app/NotificationCompat$NotificationCompatApi16Impl.class...
 processing android/support/v4/app/NotificationCompat$NotificationCompatApi19Impl.class...
 processing android/support/v4/app/NotificationCompat$NotificationCompatApi20Impl.class...
 processing android/support/v4/app/NotificationCompat$NotificationCompatApi21Impl.class...
 processing android/support/v4/app/NotificationCompat$NotificationCompatApi24Impl.class...
 processing android/support/v4/app/NotificationCompat$NotificationCompatApi26Impl.class...
 processing android/support/v4/app/NotificationCompat$NotificationCompatBaseImpl.class...
 processing android/support/v4/app/NotificationCompat$NotificationCompatBaseImpl$BuilderBase.class...
 processing android/su<message truncated>