title: FireBase stuck on "Run your app to verify installation" for android
body: <p>I'm new to android development, since a long time, I'm stuck in one error that is Run your app to verify installation (Checking if the app has communicated with our servers. You may need to uninstall and reinstall your app.)</p>
  
  <pre><code>build.gradle(Module:app)
      dependencies {
          implementation fileTree(dir: 'libs', include: ['*.jar'])
          implementation 'com.android.support:appcompat-v7:26.1.0'
          implementation 'com.android.support.constraint:constraint-layout:1.1.3'
          testImplementation 'junit:junit:4.12'
          androidTestImplementation 'com.android.support.test:runner:1.0.2'
          androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
          implementation 'com.google.firebase:firebase-core:16.0.1'
      }
  
       dependencies {
              classpath 'com.android.tools.build:gradle:3.3.2'
              classpath 'com.google.gms:google-services:4.0.1'
              // NOTE: Do not place your application dependencies here; they belong
              // in the individual module build.gradle files
          }
  </code></pre>