I updated IntelliJ IDEA to 2020.1 and got following error when tried to use plugin:
java.lang.NoSuchMethodError: 'com.intellij.ide.plugins.IdeaPluginDescriptorImpl com.intellij.openapi.updateSettings.impl.PluginDownloader.loadDescriptionFromJar(java.io.File)'
at com.homework.plugin.PluginUtil.updatePlugin(PluginUtil.java:510)
at com.homework.plugin.PluginUtil.isPluginNeedUpdate(PluginUtil.java:479)
at com.homework.plugin.button.AbstractButton.checkPluginVersion(AbstractButton.java:51)
at com.homework.plugin.button.AbstractButton.performCheck(AbstractButton.java:32)
at com.homework.plugin.button.SelectTaskButton.actionPerformed(SelectTaskButton.java:15)
at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:280)
at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAwareWithCallbacks(ActionUtil.java:274)
at com.intellij.openapi.actionSystem.impl.ActionButton.actionPerformed(ActionButton.java:184)
at com.intellij.openapi.actionSystem.impl.ActionButton.performAction(ActionButton.java:157)
at com.intellij.openapi.actionSystem.impl.ActionButton.processMouseEvent(ActionButton.java:442)
at java.desktop/java.awt.Component.processEvent(Component.java:6416)
at java.desktop/java.awt.Container.processEvent(Container.java:2263)
at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5026)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4858)
at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4918)
at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4547)
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:2773)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4858)
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:974)
at com.intellij.ide.IdeEventQueue.dispatchMouseEvent(IdeEventQueue.java:912)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:844)
at com.intellij.ide.IdeEventQueue.lambda$null$8(IdeEventQueue.java:449)
at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:741)
at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$9(IdeEventQueue.java:448)
at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:831)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:502)
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)