Didn't find class “com.google.firebase.provider.FirebaseInitProvider”

Question

Before, my program run well. But When I just updated my Android studio to the latest version (2.2 built on 15-sept-16), I am having the following error. When I built it, it says

Answer 1

app=>build.gradle

android {
.....
defaultConfig {
......
 multiDexEnabled true//add this line
}
......
dependencies{
 compile 'com.android.support:multidex:1.0.1'//add this line
}

In manifest

 
...