"System UI has stopped" ionic 4 on android 8

Hi guys!

I’m developing an app using ionic 4.
During the beta testing one of my user get “System UI has stopped” when try to open the app and he can unistall the app only from google play store.

He’s using Android 8 on Motorola Moto z (griffin).
For now It’s the only person that get this error but it’s a major issue!

For the sake of completeness i paste here the plugin used to build the app:

 "cordova": {
    "plugins": {
      "cordova-plugin-whitelist": {},
      "cordova-plugin-statusbar": {},
      "cordova-plugin-device": {},
      "cordova-plugin-splashscreen": {},
      "cordova-plugin-ionic-webview": {
        "ANDROID_SUPPORT_ANNOTATIONS_VERSION": "27.+"
      },
      "cordova-plugin-ionic-keyboard": {},
      "cordova-sqlite-storage": {}
    },
    "platforms": [
      "ios",
      "android"
    ]
  }

and the dependencies in package.json

 "dependencies": {
    "@angular/animations": "^7.2.6",
    "@angular/cdk": "^7.3.3",
    "@angular/common": "^7.2.2",
    "@angular/core": "^7.2.2",
    "@angular/forms": "^7.2.2",
    "@angular/http": "^7.2.2",
    "@angular/material": "^7.3.3",
    "@angular/platform-browser": "^7.2.2",
    "@angular/platform-browser-dynamic": "^7.2.2",
    "@angular/router": "^7.2.2",
    "@ionic-native/core": "^5.0.0",
    "@ionic-native/in-app-purchase": "^5.2.0",
    "@ionic-native/splash-screen": "^5.0.0",
    "@ionic-native/sqlite": "^5.0.0",
    "@ionic-native/sqlite-porter": "^5.0.0",
    "@ionic-native/status-bar": "^5.0.0",
    "@ionic/angular": "^4.0.0",
    "@ionic/storage": "^2.2.0",
    "color": "^3.1.0",
    "cordova-android": "7.1.4",
    "cordova-ios": "^4.5.5",
    "cordova-plugin-device": "^2.0.2",
    "cordova-plugin-extension": "1.5.4",
    "cordova-plugin-inapppurchase": "1.2.0",
    "cordova-plugin-ionic-keyboard": "^2.1.3",
    "cordova-plugin-ionic-webview": "^3.1.2",
    "cordova-plugin-splashscreen": "^5.0.2",
    "cordova-plugin-statusbar": "^2.4.2",
    "cordova-plugin-whitelist": "^1.3.3",
    "cordova-promise-polyfill": "0.0.2",
    "cordova-sqlite-storage": "^3.1.0",
    "core-js": "^2.5.4",
    "iphone": "0.0.1",
    "rxjs": "~6.3.3",
    "web-animations-js": "^2.3.1",
    "zone.js": "~0.8.29"
  },
  "devDependencies": {
    "@angular-devkit/architect": "~0.12.3",
    "@angular-devkit/build-angular": "~0.12.3",
    "@angular-devkit/core": "~7.2.3",
    "@angular-devkit/schematics": "~7.2.3",
    "@angular/cli": "~7.2.3",
    "@angular/compiler": "~7.2.2",
    "@angular/compiler-cli": "~7.2.2",
    "@angular/language-service": "~7.2.2",
    "@ionic/angular-toolkit": "~1.3.0",
    "@ionic/lab": "1.0.20",
    "@types/jasmine": "~2.8.8",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "~10.12.0",
    "ajv": "^6.9.1",
    "codelyzer": "~4.5.0",
    "jasmine-core": "~2.99.1",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~3.1.4",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~1.1.2",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.4.0",
    "ts-node": "~8.0.0",
    "tslint": "~5.12.0",
    "typescript": "~3.1.6"
  },

I really don’t know where can be the problem.
Thank you for your help!

Tony