Android Build Error,Android Gradle Build Error

It can not be built with the following error.

CommandInvokationFailure: Gradle build failed.
/Library/Java/JavaVirtualMachines/jdk-9.0.4.jdk/Contents/Home/bin/java -classpath “/Applications/Unity/PlaybackEngines/AndroidPlayer/Tools/gradle/lib/gradle-launcher-4.0.1.jar” org.gradle.launcher.GradleMain “-Dorg.gradle.jvmargs=-Xmx2048m” “assembleRelease”


Error building Player: 2 errors


Build completed with a result of ‘Failed’
UnityEditor.BuildPlayerWindow:BuildPlayerAndRun()


at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (BuildPlayerOptions options) [0x0020e] in /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPlayerWindowBuildMethods.cs:181
at UnityEditor.BuildPlayerWindow.CallBuildMethods (Boolean askForBuildLocation, BuildOptions defaultBuildOptions) [0x00065] in /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPlayerWindowBuildMethods.cs:88
UnityEditor.BuildPlayerWindow:BuildPlayerAndRun()


I’d like to know how to solve it.

Unity is currently incompatible with JDK 9. Downgrade to JDK 8.

https://forum.unity.com/threads/java-9-jdk-9-support-by-unity-android.499354/

Thank you.
I was saved.