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Issues with signing app on Android Studio

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Lurker
I am just at the end of my app development cycle but unfortunately I can't sign the app bundle to upload it to the play store. When I attempt to use the "Generate signed APK" function it throws up this error message after I've put in the details of the keystore and moved on:
java.lang.AssertionError
at org.jetbrains.android.exportSignedPackage.ExportSignedPackageWizard.doOKAction(ExportSignedPackageWizard.java:155)
at com.intellij.ide.wizard.AbstractWizard.proceedToNextStep(AbstractWizard.java:237)
at com.intellij.ide.wizard.AbstractWizard$5.actionPerformed(AbstractWizard.java:199)
at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1972)
at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2313)
at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:405)
at java.desktop/javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262)
at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:279)
at java.desktop/java.awt.Component.processMouseEvent(Component.java:6656)
at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3385)
at java.desktop/java.awt.Component.processEvent(Component.java:6421)
at java.desktop/java.awt.Container.processEvent(Container.java:2266)
at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5026)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2324)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4854)
at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4948)
at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4575)
at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4516)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2310)
at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2804)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4854)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:790)
at java.desktop/java.awt.EventQueue$3.run(EventQueue.java:739)
at java.desktop/java.awt.EventQueue$3.run(EventQueue.java:731)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:97)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:763)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:761)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:760)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:909)
at com.intellij.ide.IdeEventQueue.dispatchMouseEvent(IdeEventQueue.java:831)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:753)
at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$5(IdeEventQueue.java:437)
at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:787)
at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$6(IdeEventQueue.java:436)
at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:105)
at com.intellij.ide.IdeEventQueue.performActivity(IdeEventQueue.java:615)
at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$7(IdeEventQueue.java:434)
at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:838)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:480)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:207)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:121)
at java.desktop/java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:191)
at java.desktop/java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:236)
at java.desktop/java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:234)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:318)
at java.desktop/java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:234)
at java.desktop/java.awt.Dialog.show(Dialog.java:1080)
at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl$MyDialog.show(DialogWrapperPeerImpl.java:743)
at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl.show(DialogWrapperPeerImpl.java:467)
at com.intellij.openapi.ui.DialogWrapper.doShow(DialogWrapper.java:1676)
at com.intellij.openapi.ui.DialogWrapper.show(DialogWrapper.java:1634)
at org.jetbrains.android.exportSignedPackage.ExportSignedPackageWizard.show(ExportSignedPackageWizard.java:168)
at org.jetbrains.android.actions.GenerateSignedApkAction.actionPerformed(GenerateSignedApkAction.java:62)
at com.intellij.openapi.actionSystem.ex.ActionUtil.doPerformActionOrShowPopup(ActionUtil.java:327)
at com.intellij.openapi.actionSystem.ex.ActionUtil.lambda$performActionDumbAwareWithCallbacks$4(ActionUtil.java:306)
at com.intellij.openapi.actionSystem.ex.ActionUtil.performDumbAwareWithCallbacks(ActionUtil.java:350)
at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAwareWithCallbacks(ActionUtil.java:306)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem.lambda$performAction$5(ActionMenuItem.java:296)
at com.intellij.openapi.wm.impl.FocusManagerImpl.runOnOwnContext(FocusManagerImpl.java:226)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem.performAction(ActionMenuItem.java:289)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem.lambda$new$0(ActionMenuItem.java:64)
at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1972)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem.lambda$fireActionPerformed$4(ActionMenuItem.java:111)
at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:105)
at com.intellij.openapi.application.TransactionGuardImpl.performUserActivity(TransactionGuardImpl.java:94)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:111)
at com.intellij.ui.plaf.beg.BegMenuItemUI.doClick(BegMenuItemUI.java:526)
at com.intellij.ui.plaf.beg.BegMenuItemUI$MyMouseInputHandler.mouseReleased(BegMenuItemUI.java:558)
at java.desktop/java.awt.Component.processMouseEvent(Component.java:6656)
at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3385)
at java.desktop/java.awt.Component.processEvent(Component.java:6421)
at java.desktop/java.awt.Container.processEvent(Container.java:2266)
at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5026)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2324)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4854)
at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4948)
at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4575)
at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4516)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2310)
at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2804)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4854)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:790)
at java.desktop/java.awt.EventQueue$3.run(EventQueue.java:739)
at java.desktop/java.awt.EventQueue$3.run(EventQueue.java:731)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:97)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:763)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:761)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:760)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:909)
at com.intellij.ide.IdeEventQueue.dispatchMouseEvent(IdeEventQueue.java:831)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:753)
at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$5(IdeEventQueue.java:437)
at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:787)
at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$6(IdeEventQueue.java:436)
at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:113)
at com.intellij.ide.IdeEventQueue.performActivity(IdeEventQueue.java:615)
at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$7(IdeEventQueue.java:434)
at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:838)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:480)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:207)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:92)

Any help would be greatly appreciated, thanks for reading
 
The error stack trace you've posted points to a java.lang.AssertionError, which typically suggests that there might be an issue or a bug in the IntelliJ/Android Studio environment you are using. Here are some steps to potentially resolve this issue:

1. Update Android Studio:​

  • Make sure you're using the latest version of Android Studio. Updates often include bug fixes.

2. Invalidate Caches and Restart:​

  • Go to File > Invalidate Caches / Restart... > Invalidate and Restart.
  • This clears the cache and restarts Android Studio, which could resolve the issue if it’s caused by a corrupted cache.

3. Review Keystore Details:​

  • Double-check the details of the keystore you are using for signing. Ensure that the path, password, and alias are correctly entered.

4. Review Gradle Configuration:​

  • Make sure that your Gradle configuration is correct, and that there aren’t any inconsistencies that might cause the signing process to fail.

5. Try Command Line:​

  • Try signing your app using the command line. You can use the following command:
Bash: 
./gradlew bundleRelease

This will generate a signed app bundle.

6. Re-create Keystore:​

  • As a last resort, you can try creating a new keystore and signing the app with it. Make sure you keep the details of the new keystore secure and backed up.

7. Check for Plugin Conflicts:​

  • Disable any unnecessary plugins in your Android Studio to avoid conflicts that might be causing this issue.

8. Reinstall Android Studio:​

  • If none of the above steps work, you might consider reinstalling Android Studio.

9. Check for External Reports:​

  • Look for similar issues reported by other developers, as this might be a known bug, and there might be a workaround or a fix available.

10. Review Environment and Configuration:​

  • Make sure your system’s environment variables and configuration settings are correct, as misconfigurations might lead to such errors.
I hope one of these solutions helps resolve the issue! Remember to always keep a backup of your work before attempting significant changes like reinstalling software or invalidating caches.
 
Thank you for the replies, I went through them but unfortunately it didn't work out. However I did circumvent the process with the method shown in this video:
. It used command prompt to create a key rather than Android Studio and it works fine. I hope this helps anyone with the same issue.
 
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