react native - error while fetching build tools files

Question

I am unable to build my android app using react-native run-android, because I get following error. Yesterday everything worked fine. Do you know where could be the

Answer 1

Add the following line in your project`s gradle file

allprojects {
    repositories {
        .....
        ......
        maven { url 'https://maven.google.com' }  //  Add this line.
        ......
    } }