title: Could not find manifest-merger.jar (com.android.tools.build:manifest-merger:26.0.0) in ionic3?
body: <p>I have got above error after generating build in ionic3 I have tried a lot of solution but not working tell me, anyone, how to fix above error?
  below I have to include //Project-properties file.
  I have tried below solution but did not work for me :</p>
  
  <ol>
  <li><a href="https://stackoverflow.com/questions/43280871/android-getting-manifest-merger-failed-error-after-updating-to-a-new-version">Android: Getting &quot;Manifest merger failed&quot; error after updating to a new version of gradle</a></li>
  <li><a href="https://forum.ionicframework.com/t/solved-ionic-run-android-com-android-support-conflicting-v26-alpha1-and-v25-3-1/91826/19" rel="noreferrer">https://forum.ionicframework.com/t/solved-ionic-run-android-com-android-support-conflicting-v26-alpha1-and-v25-3-1/91826/19</a></li>
  </ol>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="false" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>//Project-properties file
  target=android-26
  android.library.reference.1=CordovaLib
  cordova.system.library.1=com.razorpay:checkout:1.4.6
  cordova.system.library.2=com.android.support:support-v4:24.1.1+
  cordova.system.library.3=com.google.firebase:firebase-core:+
  cordova.system.library.4=com.google.firebase:firebase-messaging:+
  cordova.gradle.include.1=cordova-plugin-fcm/app-FCMPlugin.gradle
  cordova.system.library.5=com.android.support:support-v4:25.+
  cordova.system.library.6=com.android.support:appcompat-v7:25.+
  cordova.system.library.7=com.android.support:support-v4:24.1.1+
  cordova.gradle.include.2=phonegap-plugin-barcodescanner/app-barcodescanner.gradle
  cordova.system.library.8=com.squareup.okhttp3:okhttp:3+</code></pre>
  </div>
  </div>
  </p>