title: Couldn't sync after adding depenency to gradle in VScode
body: <p>I tried to configure my flutter project in order to use firebase. I added all the dependency and couldn't sync after adding the lines mentioned in the firebase to Gradle build. 
  How do I sync in <strong>vscode</strong>.</p>
  
  <p><strong><em>added depenency for firebase:</em></strong></p>
  
  <p><strong>In project -> android -> app -> build.gradle :</strong></p>
  
  <pre><code>apply plugin: 'com.google.gms.google-services'
  </code></pre>
  
  <p><strong>In project -> gradle -> build.gradle:</strong></p>
  
  <pre><code> dependencies {
          classpath 'com.android.tools.build:gradle:3.2.1'
          **classpath 'com.google.gms:google-services:4.3.3'**
      }
  </code></pre>
  
  <p><strong>IN project -> pubspec.yaml</strong></p>
  
  <pre><code>firebase_auth: ^0.14.0+5
  </code></pre>
  
  <p>Also ran <code>flutter pub get</code></p>
  
  <p><strong><em>Error log:</em></strong></p>
  
  <pre><code>* Error running Gradle:
  ProcessException: Process "C:\Users\LENOVO\Documents\flutter_apps\time_tracker_flutter_course\android\gradlew.bat" exited abnormally:
  Starting a Gradle Daemon (subsequent builds will be faster)
  
  
  FAILURE: Build failed with an exception.
  
  * Where:
  Build file 'C:\Users\LENOVO\Documents\flutter_apps\time_tracker_flutter_course\android\app\build.gradle' line: 24
  
  * What went wrong:
  A problem occurred evaluating project ':app'.
  &gt; ASCII
  
  * 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 2m 23s
    Command: C:\Users\LENOVO\Documents\flutter_apps\time_tracker_flutter_course\android\gradlew.bat app:properties
  
  Please review your Gradle project setup in the android/ folder.
  Exited (sigterm)
  </code></pre>