IMPORTANT: Please read https://developer.android.com/studio/report-bugs.html carefully and supply all required information.

Android Studio Arctic Fox | 2020.3.1 Beta 3
Build #AI-203.7717.56.2031.7395685, built on May 24, 2021
Runtime version: 11.0.10+0-b96-7281165 x86_64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
macOS 11.4
GC: G1 Young Generation, G1 Old Generation
Memory: 2048M
Cores: 16
Registry: external.system.auto.import.disabled=true, debugger.watches.in.variables=false

Steps to Reproduce:

Open a language APK file in Build -> Analyze APK
Click on resources.arsc
Nothing loads

From the AS logs:

2021-06-30 12:44:02,615 [ 201809]  ERROR - llij.ide.plugins.PluginManager - null 
java.lang.AssertionError
	at com.android.tools.idea.apk.viewer.arsc.ResourceTablePanel.<init>(ResourceTablePanel.java:57)
	at com.android.tools.idea.apk.viewer.arsc.ArscViewer.<init>(ArscViewer.java:28)
	at com.android.tools.idea.apk.viewer.ApkEditor.getEditor(ApkEditor.java:329)
	at com.android.tools.idea.apk.viewer.ApkEditor.selectionChanged(ApkEditor.java:171)
	at com.android.tools.idea.apk.viewer.ApkViewPanel.valueChanged(ApkViewPanel.java:372)
	at java.desktop/javax.swing.JTree.fireValueChanged(JTree.java:2967)
	at java.desktop/javax.swing.JTree$TreeSelectionRedirector.valueChanged(JTree.java:3456)
	at java.desktop/javax.swing.tree.DefaultTreeSelectionModel.fireValueChanged(DefaultTreeSelectionModel.java:641)
	at com.intellij.ui.treeStructure.Tree$MySelectionModel.fireValueChanged(Tree.java:628)
	at java.desktop/javax.swing.tree.DefaultTreeSelectionModel.notifyPathChange(DefaultTreeSelectionModel.java:1111)
	at java.desktop/javax.swing.tree.DefaultTreeSelectionModel.setSelectionPaths(DefaultTreeSelectionModel.java:297)
	at java.desktop/javax.swing.tree.DefaultTreeSelectionModel.setSelectionPath(DefaultTreeSelectionModel.java:191)
	at java.desktop/javax.swing.JTree.setSelectionPath(JTree.java:1656)
	at java.desktop/javax.swing.plaf.basic.BasicTreeUI.selectPathForEvent(BasicTreeUI.java:2736)
	at java.desktop/javax.swing.plaf.basic.BasicTreeUI$Handler.handleSelection(BasicTreeUI.java:4016)
	at java.desktop/javax.swing.plaf.basic.BasicTreeUI$Handler.mousePressed(BasicTreeUI.java:3955)
	at com.intellij.util.ui.MouseEventAdapter.mousePressed(MouseEventAdapter.java:30)
	at java.desktop/java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:288)
	at java.desktop/java.awt.Component.processMouseEvent(Component.java:6649)
	at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3345)
	at com.intellij.ui.treeStructure.Tree.processMouseEvent(Tree.java:395)
	at java.desktop/java.awt.Component.processEvent(Component.java:6417)
	at java.desktop/java.awt.Container.processEvent(Container.java:2263)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5027)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4859)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4918)
	at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4544)
	at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4488)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2307)
	at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2784)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4859)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:778)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:727)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:751)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:749)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:748)
	at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:976)
	at com.intellij.ide.IdeEventQueue.dispatchMouseEvent(IdeEventQueue.java:911)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:840)
	at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$8(IdeEventQueue.java:454)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:773)
	at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$9(IdeEventQueue.java:453)
	at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:828)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:507)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
2021-06-30 12:44:02,618 [ 201812]  ERROR - llij.ide.plugins.PluginManager - Android Studio Arctic Fox | 2020.3.1 Beta 3  Build #AI-203.7717.56.2031.7395685 
2021-06-30 12:44:02,621 [ 201815]  ERROR - llij.ide.plugins.PluginManager - JDK: 11.0.10; VM: OpenJDK 64-Bit Server VM; Vendor: JetBrains s.r.o. 
2021-06-30 12:44:02,621 [ 201815]  ERROR - llij.ide.plugins.PluginManager - OS: Mac OS X 
2021-06-30 12:44:02,622 [ 201816]  ERROR - llij.ide.plugins.PluginManager - Last Action: Android.AnalyzeApk 
2021-06-30 12:44:11,581 [ 210775]  ERROR - llij.ide.plugins.PluginManager - null 
java.lang.AssertionError
	at com.android.tools.idea.apk.viewer.arsc.ResourceTablePanel.<init>(ResourceTablePanel.java:57)
	at com.android.tools.idea.apk.viewer.arsc.ArscViewer.<init>(ArscViewer.java:28)
	at com.android.tools.idea.apk.viewer.ApkEditor.getEditor(ApkEditor.java:329)
	at com.android.tools.idea.apk.viewer.ApkEditor.selectionChanged(ApkEditor.java:171)
	at com.android.tools.idea.apk.viewer.ApkViewPanel.valueChanged(ApkViewPanel.java:372)
	at java.desktop/javax.swing.JTree.fireValueChanged(JTree.java:2967)
	at java.desktop/javax.swing.JTree$TreeSelectionRedirector.valueChanged(JTree.java:3456)
	at java.desktop/javax.swing.tree.DefaultTreeSelectionModel.fireValueChanged(DefaultTreeSelectionModel.java:641)
	at com.intellij.ui.treeStructure.Tree$MySelectionModel.fireValueChanged(Tree.java:628)
	at java.desktop/javax.swing.tree.DefaultTreeSelectionModel.notifyPathChange(DefaultTreeSelectionModel.java:1111)
	at java.desktop/javax.swing.tree.DefaultTreeSelectionModel.setSelectionPaths(DefaultTreeSelectionModel.java:297)
	at java.desktop/javax.swing.tree.DefaultTreeSelectionModel.setSelectionPath(DefaultTreeSelectionModel.java:191)
	at java.desktop/javax.swing.JTree.setSelectionPath(JTree.java:1656)
	at java.desktop/javax.swing.plaf.basic.BasicTreeUI.selectPathForEvent(BasicTreeUI.java:2736)
	at java.desktop/javax.swing.plaf.basic.BasicTreeUI$Handler.handleSelection(BasicTreeUI.java:4016)
	at java.desktop/javax.swing.plaf.basic.BasicTreeUI$Handler.mousePressed(BasicTreeUI.java:3955)
	at com.intellij.util.ui.MouseEventAdapter.mousePressed(MouseEventAdapter.java:30)
	at java.desktop/java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:288)
	at java.desktop/java.awt.Component.processMouseEvent(Component.java:6649)
	at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3345)
	at com.intellij.ui.treeStructure.Tree.processMouseEvent(Tree.java:395)
	at java.desktop/java.awt.Component.processEvent(Component.java:6417)
	at java.desktop/java.awt.Container.processEvent(Container.java:2263)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5027)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4859)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4918)
	at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4544)
	at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4488)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2307)
	at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2784)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4859)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:778)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:727)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:751)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:749)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:748)
	at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:976)
	at com.intellij.ide.IdeEventQueue.dispatchMouseEvent(IdeEventQueue.java:911)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:840)
	at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$8(IdeEventQueue.java:454)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:773)
	at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$9(IdeEventQueue.java:453)
	at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:828)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:507)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)