How to make Expo and BarCodeScanner friends from its own documentation?

Question

React Native

Good afternoon, for several days I can not understand what the problem is. BarCodeScanner works in develop mode, and after building it in apk it stops working (I tried it on 6 different devices).
You need to scan a barcode on an android phone. I generate a new application expo init testApp. I execute expo install expo-barcode-scanner to install the package and take a piece of code from the example in the documentation from here https://docs.expo.io/versions/v37.0.0/sdk/bar-code... paste it into App.js with replacement. I launch the expo start application and it works on all phones . Next, I publish and build the application to get apk: expo publish and expo build: android. I take apk and a request for rights to the camera comes up, the camera works and the picture is there, but the scanning itself does not occur. I just don't know what I could be wrong about. There is a suspicion that something is missing in app.json ...

this is how my app.json looks like

{
  "expo": {
    "name": "testApp",
    "slug": "test-app",
    "privacy": "public",
    "sdkVersion": "37.0.0",
    "platforms": [
      "android"
    ],
    "version": "1.0.0",
    "orientation": "portrait",
    "icon": "./assets/icon.png",
    "splash": {
      "image": "./assets/splash.png",
      "resizeMode": "contain",
      "backgroundColor": "#ffffff"
    },
    "updates": {
      "fallbackToCacheTimeout": 0
    },
    "assetBundlePatterns": ["**/*"],
    "android": {
      "package": "com.example.testapp",
      "versionCode": 1,
      "permissions": [
        "CAMERA"
      ]
    }
  }
}