Admob and google analytics problem

I want to use AdMob Free and Google Analytics native plugins at the same project. I can use only AdMob or only Google Analytics at my project without any problem. But when I use both of plugins, my app crashes with “Sorry app has failed” error message:

Any idea?

Here is my ionic configuration:

$ ionic info
cli packages: (/usr/local/lib/node_modules)
    @ionic/cli-utils  : 1.19.2
    ionic (Ionic CLI) : 3.20.0

global packages:
    cordova (Cordova CLI) : 8.0.0 

local packages:
    @ionic/app-scripts : 3.1.9
    Cordova Platforms  : android 6.4.0 browser 5.0.3
    Ionic Framework    : ionic-angular 3.9.2

    Android SDK Tools : 26.1.1
    Node              : v8.10.0
    npm               : 3.5.2 
    OS                : Linux 4.15

Environment Variables:
    ANDROID_HOME : /opt/Android/Sdk/

    backend : pro