Ionic build wrong apk file

Hi to everybody,

I’m having a new trouble with ionic: when I run: ionic cordova run android, build succeed but this message is printed out:

No target specified, deploying to device ‘7BKDU17709003433’.
Skipping build…
Built the following apk(s):
Using apk: C:\xampp\htdocs\projectKobe\platforms\android\app\build\outputs\apk\debug\app-debug.apk
Package name: com.example.hello

So, app is installed but it doesn’t work. It has the default splash screen and nothing works. I’ve tried to delete app from my phone or to remove and add again android platform, i’ve tried also to run: ionic cordova run android --prod but nothing happens, trouble is the same. Please help me, in two days I have the presentation of the app of my thesis.

N.B.: ionic serve works perfectly

Thanks to all

Vous le faite sur emumateur ou directement sur le smartphonne via usb?

Sorry to all, I’m crushed. The error was that config.xml was wrong. Thanks to all