 <p>It means your project has hit the limit. Read: <a href="https://developer.android.com/tools/building/multidex.html">https://developer.android.com/tools/building/multidex.html</a></p> <p>You need to enable multidex, which you can by:</p> <pre><code>defaultConfig { ... multiDexEnabled true } dependencies { ... compile 'com.android.support:multidex:1.0.0' } </code></pre> <p>extend your Application class with <a href="https://developer.android.com/reference/android/support/multidex/MultiDexApplication.html">MultiDexApplication</a> and edit your AndroidManifest.xml as explained in the link itself.</p>