Fix: Error: Could not find or load main class org.gradle.wrapper. GradleWrapperMain

Error: Could not find or load main class org.gradle.wrapper. GradleWrapperMain

error Could not install the app on the device, read the error above for details. 
Make sure you have an Android emulator running or a device connected and have
set up your Android development environment:
https://facebook.github.io/react-native/docs/getting-started.html
error Command failed: /gradlew app:installDebug.

If you are getting the above error while working on your Android Project in Android Studio, well this can be solved by following the below steps.

Step 1:

The first thing you should do is make sure that gradlew (or gradle.bat) file is present in your project root folder.

If you see these files are missing then you will need to add the Gradle Wrapper

Run the below command as per your Operating System:

Read More: https://docs.gradle.org/current/userguide/gradle_wrapper.html#sec:adding_wrapper

Step 2:

Now check the Gradle version just to be sure it has been installed correctly.

gradle --version

Step 3:

Another thing that you can do is check if ANDROID_HOME environment variable is set correctly.

Windows: echo %ANDROID_HOME%

macOS/Linux: echo $ANDROID_HOME

Step 4

Try to re-build your project.

Windows: gradlew clean

macOS/Linux: ./gradlew clean

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