title: Mutidex and Kotlin
body: <p>I am working on a project where we use multidex to build our app. I started to see many error like this in our build:</p>
  
  <pre><code>java.lang.NoClassDefFoundError: kotlin.reflect.jvm.internal.pcollections.MapEntry
  </code></pre>
  
  <p>Many classes related to kotlin.reflect started be not found in the build. It only happens in APIs 19 and bellow. </p>
  
  <p>Does anyone knows what may be causing this and how to solve this problems? </p>