Error：
java.lang.NoSuchMethodError:
com.intellij.ide.plugins.PluginManagerCore.getEnabledPluginRawList()Ljava/util/List;
at com.a.b.b.a.am.a(am.java:127)
at com.a.b.b.a.am.a(am.java:76)
at com.a.b.b.a.ai.a(ai.java:56)
at com.intellij.idea.MainImpl.start(MainImpl.java:19)
at com.intellij.idea.StartupUtil.lambda$startApp$5(StartupUtil.java:248)
at com.intellij.util.ui.EdtInvocationManager.executeWithCustomManager(EdtInvocationManager.java:73)
at com.intellij.idea.StartupUtil.startApp(StartupUtil.java:243)
at com.intellij.idea.StartupUtil.prepareApp(StartupUtil.java:214)
at com.intellij.ide.plugins.MainRunner.lambda$start$0(MainRunner.java:45)
at java.lang.Thread.run(Thread.java:748)
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JRE 1.8.0_242-release-1644-b3-6222593 x86_64 by JetBrains s.r.o
解决方法：
删除整个marketplace文件夹，再重启Android Studio。位置：/Users/你自己的账户下/Library/Application\ Support/AndroidStudio4.0/marketplace