title: A problem occurred configuring project ':app'
body: <p>Getting error when trying react-native run-android.I don't know why I'm getting this error. </p>
  
  <pre><code>FAILURE: Build failed with an exception.
  
  * What went wrong:
  A problem occurred configuring project ':app'.
  &gt; Could not resolve all dependencies for configuration ':app:_debugApk'.
  &gt; A problem occurred configuring project ':react-native-vector-icons'.
    &gt; Could not resolve all dependencies for configuration ':react-native-vector-icons:classpath'.
       &gt; Could not find any matches for com.android.tools.build:gradle:2.3.+ as no versions of com.android.tools.build:gradle are available.
  </code></pre>
  
  <p>android\build.gradle  is as follows.   </p>
  
  <pre><code>buildscript {
  repositories {
      jcenter()
  }
  dependencies {
      classpath 'com.android.tools.build:gradle:2.2.3'
  
      // NOTE: Do not place your application dependencies here; they belong
      // in the individual module build.gradle files
     }
  }
  
  allprojects {
  repositories {
      mavenLocal()
      jcenter()
      maven {
          // All of React Native (JS, Obj-C sources, Android binaries) is 
   installed from npm
          url "$rootDir/../node_modules/react-native/android"
      }
   }
  }
  </code></pre>
  
  <p>gradle version: 3.3, 
  plugin:2.2.3</p>