Ionic export apk android

Hello ! i’m front end developer. I 've a trouble with my app , I want to export to apk and I can’t do it because I have a error with gradle with cordova it’s execurted

Execution failed for task ‘:app:transformDexArchiveWithExternalLibsDexMergerForDebug’

My ionic info is

Ionic:

Ionic CLI : 5.4.9 (/usr/local/lib/node_modules/ionic)
Ionic Framework : @ionic/angular 4.7.1
@angular-devkit/build-angular : 0.801.3
@angular-devkit/schematics : 8.1.3
@angular/cli : 8.1.3
@ionic/angular-toolkit : 2.0.0

Cordova:

Cordova CLI : 9.0.0 (cordova-lib@9.0.1)
Cordova Platforms : android 8.1.0
Cordova Plugins : cordova-plugin-ionic-keyboard 2.2.0, cordova-plugin-ionic-webview 4.1.2, (and 9 other plugins)

Utility:

cordova-res : 0.8.1
native-run : 0.2.8 (update available: 0.3.0)

System:

NodeJS : v10.16.0 (/usr/local/bin/node)
npm : 6.9.0
OS : macOS Mojave

And about Gradle
Gradle 5.6.2

Someone can help me , I need to export to apk my aplication
I’m sorry for my english