title: Android studio failed to generate signed APK in proguard error configurations
body: <p>I have a problem of generating a signed APK.</p>
  
  <p><a href="https://i.stack.imgur.com/3Auyv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3Auyv.png" alt="enter image description here"></a></p>
  
  <p><strong>and here it is the proguard-rules.pro file</strong></p>
  
  <pre><code>-assumenosideeffects class android.util.Log {
      public static int v(...);
      public static int d(...);
  }
  
  # Required to preserve the Flurry SDK
  #-keep class com.flurry.** { *; }
  #-dontwarn com.flurry.**
  #-keepattributes *Annotation*,EnclosingMethod,Signature
  #-keepclasseswithmembers class * {
  #   public (android.content.Context, android.util.AttributeSet, int);
  # }
  
   # Google Play Services library
   -keep class * extends java.util.ListResourceBundle {
     protected Object[ ][ ] getContents();
  }
  
   -keep public class com.google.android.gms.common.internal.safeparcel.SafeParcelable {
    public static final *** NULL;
   }
  
   -keepnames @com.google.android.gms.common.annotation.KeepName class *
   -keepclassmembernames class * {
      @com.google.android.gms.common.annotation.KeepName *;
    }
  
   -keepnames class * implements android.os.Parcelable {
    public static final ** CREATOR;
   }
  </code></pre>
  
  <p>and the error as described in the following line</p>
  
  <pre><code> # Google Play Services library
   -keep class * extends java.util.ListResourceBundle {
     protected Object[ ][ ] getContents();
  }
  </code></pre>
  
  <p>and the used lib version are </p>
  
  <ul>
  <li>minSdkVersion = 19</li>
  <li>targetSdkVersion = 27</li>
  <li>compileSdkVersion = 27</li>
  <li>buildToolsVersion = '27.0.0'</li>
  <li>supportLibraryVersion = '27.0.1'</li>
  <li>gmsVersion = '11.6.0'</li>
  <li>firebaseVersion = '11.6.0'</li>
  </ul>
  
  <p>classpath 'com.android.tools.build:gradle:3.0.1'</p>
  
  <p>classpath 'com.google.gms:google-services:3.1.0'</p>
  
  <p>I need a help, what is the problem, and how to solve it?</p>
  
  <p><strong>Note: I have no problem of running the app on my device through the USB, but I cannot generate the APK for release.</strong></p>