Error while trying to build an extension?

Hey,

I am trying to use extension-template to build an extension.
I keep getting errors with dependencies.
So, I tried running update-deps.sh, but I get an error during compilation:

     [java] Exception in thread "main" java.lang.RuntimeException: com.android.tools.r8.CompilationFailedException: Compilation failed to complete, origin: /tmp/Barcode17317059878461383328.jar:com/google/zxing/client/android/AppInvCaptureActivity$1.class
     [java] 	at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:126)
     [java] 	at com.android.tools.r8.D8.main(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:5)
     [java] Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete, origin: /tmp/Barcode17317059878461383328.jar:com/google/zxing/client/android/AppInvCaptureActivity$1.class
     [java] 	at Version.fakeStackEntry(Version_8.2.2-dev.java:0)
     [java] 	at com.android.tools.r8.M.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:5)
     [java] 	at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:81)
     [java] 	at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:32)
     [java] 	at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:31)
     [java] 	at com.android.tools.r8.utils.R0.b(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:2)
     [java] 	at com.android.tools.r8.D8.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:26)
     [java] 	at com.android.tools.r8.D8.b(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:13)
     [java] 	at com.android.tools.r8.D8.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:24)
     [java] 	at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:113)
     [java] 	... 1 more
     [java] Caused by: java.lang.IllegalArgumentException: Unsupported class file major version 65
     [java] 	at com.android.tools.r8.internal.Ga.<init>(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:10)
     [java] 	at com.android.tools.r8.internal.Ga.<init>(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:2)
     [java] 	at com.android.tools.r8.graph.T3.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:24)
     [java] 	at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:129)
     [java] 	at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:130)
     [java] 	at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:128)
     [java] 	at com.android.tools.r8.graph.T3.b(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:2)
     [java] 	at com.android.tools.r8.dex.a.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:27)
     [java] 	at java.base/java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1456)
     [java] 	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387)
     [java] 	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312)
     [java] 	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843)
     [java] 	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808)
     [java] 	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188)
     [java] 	Suppressed: java.lang.RuntimeException: java.util.concurrent.ExecutionException: com.android.tools.r8.utils.T0: java.lang.IllegalArgumentException: Unsupported class file major version 65
     [java] 		at com.android.tools.r8.dex.c.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:60)
     [java] 		at com.android.tools.r8.dex.c.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:9)
     [java] 		at com.android.tools.r8.dex.c.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:8)
     [java] 		at com.android.tools.r8.D8.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:29)
     [java] 		at com.android.tools.r8.D8.d(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:17)
     [java] 		at com.android.tools.r8.D8.c(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:1)
     [java] 		at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:28)
     [java] 		at com.android.tools.r8.utils.R0.b(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:2)
     [java] 		at com.android.tools.r8.D8.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:26)
     [java] 		at com.android.tools.r8.D8.b(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:13)
     [java] 		at com.android.tools.r8.D8.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:24)
     [java] 		at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:113)
     [java] 		at com.android.tools.r8.D8.main(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:5)
     [java] 	Caused by: java.util.concurrent.ExecutionException: com.android.tools.r8.utils.T0: java.lang.IllegalArgumentException: Unsupported class file major version 65
     [java] 		at java.base/java.util.concurrent.ForkJoinTask.reportExecutionException(ForkJoinTask.java:581)
     [java] 		at java.base/java.util.concurrent.ForkJoinTask.get(ForkJoinTask.java:993)
     [java] 		at com.android.tools.r8.utils.d3.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:64)
     [java] 		at com.android.tools.r8.dex.c.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:41)
     [java] 		... 12 more
     [java] 	Caused by: com.android.tools.r8.utils.T0: java.lang.IllegalArgumentException: Unsupported class file major version 65
     [java] 		at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:149)
     [java] 		at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:128)
     [java] 		at com.android.tools.r8.graph.T3.b(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:2)
     [java] 		at com.android.tools.r8.dex.a.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:27)
     [java] 		at java.base/java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1456)
     [java] 		at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387)
     [java] 		at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312)
     [java] 		at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843)
     [java] 		at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808)
     [java] 		at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188)
     [java] 	Caused by: [CIRCULAR REFERENCE: java.lang.IllegalArgumentException: Unsupported class file major version 65]
     [java] Nov 28, 2024 11:34:30 AM com.google.appinventor.buildserver.util.Execution execute
     [java] INFO: ____Executing java @/tmp/1732786222539_7141340038989271040-0/youngandroidproject/../build/tmp/d8arguments.txt
     [java] Nov 28, 2024 11:34:31 AM com.google.appinventor.buildserver.util.Execution execute
     [java] INFO: ____Executing java @/tmp/1732786222539_7141340038989271040-0/youngandroidproject/../build/tmp/d8arguments.txt
     [java] Warning in /tmp/recyclerview4328361851356541568.jar:androidx/recyclerview/widget/RecyclerView.class:
     [java] Type `androidx.core.view.ScrollingView` was not found, it is required for default or static interface methods desugaring of `androidx.recyclerview.widget.RecyclerView`
     [java] Warning in /tmp/recyclerview4328361851356541568.jar:androidx/recyclerview/widget/RecyclerViewAccessibilityDelegate$ItemDelegate.class:
     [java] Type `androidx.core.view.AccessibilityDelegateCompat` was not found, it is required for default or static interface methods desugaring of `androidx.recyclerview.widget.RecyclerViewAccessibilityDelegate$ItemDelegate`
     [java] Warning in /tmp/recyclerview4328361851356541568.jar:androidx/recyclerview/widget/RecyclerView.class:
     [java] Type `androidx.core.view.NestedScrollingChild2` was not found, it is required for default or static interface methods desugaring of `androidx.recyclerview.widget.RecyclerView`
     [java] Warning in /tmp/recyclerview4328361851356541568.jar:androidx/recyclerview/widget/RecyclerView$SavedState.class:
     [java] Type `androidx.customview.view.AbsSavedState` was not found, it is required for default or static interface methods desugaring of `androidx.recyclerview.widget.RecyclerView$SavedState`
     [java] Nov 28, 2024 11:34:36 AM com.google.appinventor.buildserver.util.Execution execute
     [java] INFO: ____Executing java @/tmp/1732786222539_7141340038989271040-0/youngandroidproject/../build/tmp/d8arguments.txt
     [java] Nov 28, 2024 11:34:42 AM com.google.appinventor.buildserver.util.Execution execute
     [java] INFO: ____Executing java @/tmp/1732786222539_7141340038989271040-0/youngandroidproject/../build/tmp/d8arguments.txt
     [java] Nov 28, 2024 11:34:46 AM com.google.appinventor.buildserver.util.Execution execute
     [java] INFO: ____Executing java @/tmp/1732786222539_7141340038989271040-0/youngandroidproject/../build/tmp/d8arguments.txt
     [java] Warning in /tmp/jedis15076474729730178845.jar:org/apache/commons/pool2/proxy/CglibProxyHandler.class:
     [java] Type `net.sf.cglib.proxy.MethodInterceptor` was not found, it is required for default or static interface methods desugaring of `org.apache.commons.pool2.proxy.CglibProxyHandler`
     [java] Nov 28, 2024 11:34:52 AM com.google.appinventor.buildserver.util.Execution execute
     [java] INFO: ____Executing java @/tmp/1732786222539_7141340038989271040-0/youngandroidproject/../build/tmp/d8arguments.txt
     [java] Nov 28, 2024 11:34:57 AM com.google.appinventor.buildserver.util.Execution execute
     [java] INFO: ____Executing java @/tmp/1732786222539_7141340038989271040-0/youngandroidproject/../build/tmp/d8arguments.txt
     [java] Warning in /tmp/google-oauth-client-jetty6476944533786016365.jar:com/google/api/client/extensions/jetty/auth/oauth2/LocalServerReceiver$CallbackHandler.class:
     [java] Type `org.eclipse.jetty.server.handler.AbstractHandler` was not found, it is required for default or static interface methods desugaring of `com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver$CallbackHandler`
     [java] Warning in /tmp/google-oauth-client-jetty6476944533786016365.jar:com/google/api/client/extensions/jetty/auth/oauth2/LocalServerReceiver.class:
     [java] Type `com.google.api.client.extensions.java6.auth.oauth2.VerificationCodeReceiver` was not found, it is required for default or static interface methods desugaring of `com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver`
     [java] Nov 28, 2024 11:34:58 AM com.google.appinventor.buildserver.util.Execution execute
     [java] INFO: ____Executing java @/tmp/1732786222539_7141340038989271040-0/youngandroidproject/../build/tmp/d8arguments.txt
     [java] Nov 28, 2024 11:35:01 AM com.google.appinventor.buildserver.util.Execution execute
     [java] INFO: ____Executing java @/tmp/1732786222539_7141340038989271040-0/youngandroidproject/../build/tmp/d8arguments.txt
     [java] Nov 28, 2024 11:35:12 AM com.google.appinventor.buildserver.util.Execution execute
     [java] INFO: ____Executing java @/tmp/1732786222539_7141340038989271040-0/youngandroidproject/../build/tmp/d8arguments.txt
     [java] Nov 28, 2024 11:35:14 AM com.google.appinventor.buildserver.util.Execution execute
     [java] INFO: ____Executing java @/tmp/1732786222539_7141340038989271040-0/youngandroidproject/../build/tmp/d8arguments.txt
     [java] Error in /tmp/AndroidRuntime7135054871993052377.jar:com/google/appinventor/components/annotations/Asset.class:
     [java] java.lang.IllegalArgumentException: Unsupported class file major version 65
     [java] Compilation failed with an internal error.
     [java] Exception in thread "main" java.lang.RuntimeException: com.android.tools.r8.CompilationFailedException: Compilation failed to complete, origin: /tmp/AndroidRuntime7135054871993052377.jar:com/google/appinventor/components/annotations/Asset.class
     [java] 	at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:126)
     [java] 	at com.android.tools.r8.D8.main(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:5)
     [java] Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete, origin: /tmp/AndroidRuntime7135054871993052377.jar:com/google/appinventor/components/annotations/Asset.class
     [java] 	at Version.fakeStackEntry(Version_8.2.2-dev.java:0)
     [java] 	at com.android.tools.r8.M.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:5)
     [java] 	at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:81)
     [java] 	at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:32)
     [java] 	at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:31)
     [java] 	at com.android.tools.r8.utils.R0.b(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:2)
     [java] 	at com.android.tools.r8.D8.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:26)
     [java] 	at com.android.tools.r8.D8.b(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:13)
     [java] 	at com.android.tools.r8.D8.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:24)
     [java] 	at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:113)
     [java] 	... 1 more
     [java] Caused by: java.lang.IllegalArgumentException: Unsupported class file major version 65
     [java] 	at com.android.tools.r8.internal.Ga.<init>(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:10)
     [java] 	at com.android.tools.r8.internal.Ga.<init>(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:2)
     [java] 	at com.android.tools.r8.graph.T3.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:24)
     [java] 	at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:129)
     [java] 	at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:130)
     [java] 	at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:128)
     [java] 	at com.android.tools.r8.graph.T3.b(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:2)
     [java] 	at com.android.tools.r8.dex.a.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:27)
     [java] 	at java.base/java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1456)
     [java] 	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387)
     [java] 	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312)
     [java] 	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843)
     [java] 	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808)
     [java] 	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188)
     [java] 	Suppressed: java.lang.RuntimeException: java.util.concurrent.ExecutionException: com.android.tools.r8.utils.T0: java.lang.IllegalArgumentException: Unsupported class file major version 65
     [java] 		at com.android.tools.r8.dex.c.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:60)
     [java] 		at com.android.tools.r8.dex.c.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:9)
     [java] 		at com.android.tools.r8.dex.c.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:8)
     [java] 		at com.android.tools.r8.D8.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:29)
     [java] 		at com.android.tools.r8.D8.d(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:17)
     [java] 		at com.android.tools.r8.D8.c(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:1)
     [java] 		at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:28)
     [java] 		at com.android.tools.r8.utils.R0.b(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:2)
     [java] 		at com.android.tools.r8.D8.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:26)
     [java] 		at com.android.tools.r8.D8.b(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:13)
     [java] 		at com.android.tools.r8.D8.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:24)
     [java] 		at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:113)
     [java] 		at com.android.tools.r8.D8.main(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:5)
     [java] 	Caused by: java.util.concurrent.ExecutionException: com.android.tools.r8.utils.T0: java.lang.IllegalArgumentException: Unsupported class file major version 65
     [java] 		at java.base/java.util.concurrent.ForkJoinTask.reportExecutionException(ForkJoinTask.java:581)
     [java] 		at java.base/java.util.concurrent.ForkJoinTask.get(ForkJoinTask.java:993)
     [java] 		at com.android.tools.r8.utils.d3.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:64)
     [java] 		at com.android.tools.r8.dex.c.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:41)
     [java] 		... 12 more
     [java] 	Caused by: com.android.tools.r8.utils.T0: java.lang.IllegalArgumentException: Unsupported class file major version 65
     [java] 		at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:149)
     [java] 		at com.android.tools.r8.utils.R0.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:128)
     [java] 		at com.android.tools.r8.graph.T3.b(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:2)
     [java] 		at com.android.tools.r8.dex.a.a(R8_8.2.2-dev_53a55043254cc5be8ef500331bba25d1b4ca4bc2cd66c555d4358bf672a1f10a:27)
     [java] 		at java.base/java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1456)
     [java] 		at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387)
     [java] 		at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312)
     [java] 		at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843)
     [java] 		at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808)
     [java] 		at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188)
     [java] 	Caused by: [CIRCULAR REFERENCE: java.lang.IllegalArgumentException: Unsupported class file major version 65]
     [java] [RunD8] ERROR: d8 failed.
     [java] [RunD8] Task errored in 285.525 seconds

BUILD FAILED
/mnt/hdd2/alonbr/bin/ai2_ext_SFTPClient/.appinventor/appinventor/build.xml:90: The following error occurred while executing this line:
/mnt/hdd2/alonbr/bin/ai2_ext_SFTPClient/.appinventor/appinventor/buildserver/build.xml:204: Java returned: 1

Total time: 5 minutes 31 seconds

Please help. I am sure that there are some packages not compiled, thus causing the dependencies issues.

I think you're using JDK11. Give a try with JDK8. Or you might try the new FAST CLI extension builder that is compatible with JDK8, 11 and above.

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