npm run android > Cannot add task 'wrapper' as a task with that name already exists.

[5ervant]

Here's what I've run and what it showed:

PS C:\Users\Admin\Documents\Node.js Projects\Samples\react-native-web-app> npm run android

> creaternwapp@0.1.0 android C:\Users\Admin\Documents\Node.js Projects\Samples\react-native-web-app
> react-native run-android

Scanning folders for symlinks in C:\Users\Admin\Documents\Node.js Projects\Samples\react-native-web-app\node_modules (132ms)
JS server already running.
Building and installing the app on the device (cd android && gradlew.bat installDebug)...

FAILURE: Build failed with an exception.

* Where:
Build file 'C:\Users\Admin\Documents\Node.js Projects\Samples\react-native-web-app\android\build.gradle' line: 36

* What went wrong:
A problem occurred evaluating root project 'creaternwapp'.
> Cannot add task 'wrapper' as a task with that name already exists.

* 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 2s
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

[orYoffe]

@5ervant i would suggest to open with Android Studio, Gradle will sync and might show you an error for what sdk or other package is not installed.

Besides that in the last few lines it says to check also the environment variables as shown in the link the print in the console