Bug FAILURE: Build failed with an exception.

FAILURE: Build failed with an exception.

* Where:
Build file 'X:\My project\Library\Bee\Android\Prj\IL2CPP\Gradle\launcher\build.gradle' line: 1

* What went wrong:
A problem occurred evaluating project ':launcher'.
> Failed to apply plugin [id 'com.android.internal.application']
> Could not create plugin of type 'AppPlugin'.
> Could not generate a decorated class for type AppPlugin.
> com/google/wireless/android/sdk/stats/GradleBuildProject$PluginType

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 566ms
Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8


CommandInvokationFailure: Gradle build failed.

C:\Program Files\Java\jdk1.8.0_77\bin\java.exe -classpath "D:\Gradle\gradle-6.1.1-bin\gradle-6.1.1\lib\gradle-launcher-6.1.1.jar" org.gradle.launcher.GradleMain "-Dorg.gradle.jvmargs=-Xmx4096m" "assembleRelease"


Build completed with a result of 'Failed' in 8 seconds (7552 ms)
Build completed with a result of 'Failed' in 8 seconds (7552 ms)
UnityEngine.GUIUtilityrocessEvent (int,intptr,bool&)

 

How to troubleshoot build failures:

First, make a blank project with a single blank scene and prove that it builds successfully.

If the blank project does NOT build, go fix your Unity installation or your other tools, such as Android SDK, NDK, JDK, etc. It may even be necessary to change to a different version of Unity3D. It is generally best to stay with LTS versions of Unity3D.

Until you can build a blank project to the target platform, don't fiddle with anything else.

Once you can build a blank project, now bisect the problem by bringing over parts of your current project and building it one subsystem at a time, perhaps stubbing things out that might trigger compiler errors.

Most often things that prevent building are third-party libraries such as Firebase.

Once you identify the subsystem, go to the documentation for it and make sure you are doing it correctly.

It may also be helpful to work through a tutorial or two for whatever subsystem is making the build fail.

Android build not building:

Recently (circa July 2022) there have been reports of Unity's installer failing to install the Android Tools.

https://forum.unity.com/threads/cant-build-for-android.1306098/

Here was how I brought up Unity2020.3.41 and the Android SDK 31 on October 30, 2022:

https://forum.unity.com/threads/aab...y-2021-3-8-with-jdk-1-8.1322211/#post-8551193

Android Gradle errors and other related stuff:

https://forum.unity.com/threads/unity-gradle-bug-please-help.1368018/#post-8625789