title: Error:Execution failed for task ':app:processDebugGoogleServices'. > Please fix the version conflict
body: <p>After updating my google play services to rev 28 i'm getting this error. Im not sure why this is happening as it was working fine before.</p>
  
  <p>here is my <strong>build.gradle</strong> file</p>
  
  <pre><code>apply plugin: 'com.android.application'
  apply plugin: 'com.google.gms.google-services'
  android {
     compileSdkVersion 23
     buildToolsVersion '23.0.2'
  
  defaultConfig {
      applicationId "com.matsoltech.pakistancurrentaffairs"
      minSdkVersion 10
      targetSdkVersion 23
      versionCode 11
      versionName "2.1.1"
  }
  buildTypes {
      release {
          multiDexEnabled = true
          minifyEnabled true
          proguardFiles getDefaultProguardFile('proguard-android.txt'),      'proguard-rules.pro'
      }
   }
   }
  
  dependencies {
       compile fileTree(include: ['*.jar'], dir: 'libs')
       compile files('src/main/libs/universal-image-loader-1.9.3.jar')
       compile files('src/main/libs/nineoldandroids-2.4.0.jar')
       compile 'com.android.support:appcompat-v7:23.1.0'
       compile 'com.android.support:support-v4:23.1.0'
       compile 'com.android.support:cardview-v7:23.1.0'
       compile 'com.github.ksoichiro:android-observablescrollview:1.5.0'
       compile 'com.google.android.gms:play-services:8.3.0'
       compile 'com.mcxiaoke.volley:library:1.0.18'
       compile 'com.google.android.gms:play-services-analytics:8.3.0'
  }
  </code></pre>
  
  <p>and</p>
  
  <pre><code>buildscript {
  repositories {
      jcenter()
  }
  
  dependencies {
      classpath 'com.android.tools.build:gradle:1.3.0'
      classpath 'com.google.gms:google-services:1.4.0-beta3'
      // NOTE: Do not place your application dependencies here; they belong
      // in the individual module build.gradle files
  }
  }
  
  allprojects {
  repositories {
      jcenter()
  }
  }
  </code></pre>
  
  <p>So, can anyone please tell me where is the problem? as the code was working fine before the update of GooglePlayServices.</p>