[ERROR] Cannot create release APK

[olympikesoft]

Hi
I have followed all the steps from https://facebook.github.io/react-native/docs/signed-apk-android to generate apk for react native without EXPO and i when i check on /android/app/build/outputs/apk i only see this folder => "/android/app/build/outputs/apk/debug"
Inside debug i can check debug apk that it's an older version of the app and the output.json .
The output.json content:
[{"outputType":{"type":"APK"},"apkInfo":{"type":"MAIN","splits":[],"versionCode":1,"versionName":"1.0","enabled":true,"outputFile":"app-debug.apk","fullName":"debug","baseName":"debug"},"path":"app-debug.apk","properties":{}}]

This is my android/app/build.gradle:

project.ext.react = [
        entryFile: "index.js"
]

apply from: "../../node_modules/react-native/react.gradle"

/**
 * Set this to true to create two separate APKs instead of one:
 *   - An APK that only works on ARM devices
 *   - An APK that only works on x86 devices
 * The advantage is the size of the APK is reduced by about 4MB.
 * Upload all the APKs to the Play Store and people will download
 * the correct one based on the CPU architecture of their device.
 */
def enableSeparateBuildPerCPUArchitecture = false

/**
 * Run Proguard to shrink the Java bytecode in release builds.
 */
def enableProguardInReleaseBuilds = false

android {
    compileSdkVersion 27
    buildToolsVersion "27.0.3"

    defaultConfig {
        applicationId "com.bookingmadeira"
        minSdkVersion 16
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
        ndk {
            abiFilters "armeabi-v7a", "x86"
        }
        multiDexEnabled true

    }
    signingConfigs {
        release {
            if (project.hasProperty('MYAPP_RELEASE_STORE_FILE')) {
                storeFile file(MYAPP_RELEASE_STORE_FILE)
                storePassword MYAPP_RELEASE_STORE_PASSWORD
                keyAlias MYAPP_RELEASE_KEY_ALIAS
                keyPassword MYAPP_RELEASE_KEY_PASSWORD
            }
        }
    }
    splits {
        abi {
            reset()
            enable enableSeparateBuildPerCPUArchitecture
            universalApk false  // If true, also generate a universal APK
            include "armeabi-v7a", "x86"
        }
    }
    buildTypes {
        release {
            minifyEnabled enableProguardInReleaseBuilds
            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
            signingConfig signingConfigs.release
        }
    }
    // applicationVariants are e.g. debug, release
    applicationVariants.all { variant ->
        variant.outputs.each { output ->
            // For each separate APK per architecture, set a unique version code as described here:
            // http://tools.android.com/tech-docs/new-build-system/user-guide/apk-splits
            def versionCodes = ["armeabi-v7a":1, "x86":2]
            def abi = output.getFilter(OutputFile.ABI)
            if (abi != null) {  // null for the universal-debug, universal-release variants
                output.versionCodeOverride =
                        versionCodes.get(abi) * 1048576 + defaultConfig.versionCode
            }
        }
    }
}



dependencies {
    compile project(':react-native-paypal-android')
    compile project(':react-native-maps')
    compile project(':react-native-vector-icons')
    compile project(':react-native-fbsdk')
    compile fileTree(dir: "libs", include: ["*.jar"])
    //noinspection GradleCompatible
    compile "com.android.support:appcompat-v7:27.1.1"
    compile "com.facebook.react:react-native:+"  // From node_modules
    compile "com.google.android.gms:play-services-base:15.0.1"
    compile "com.google.android.gms:play-services-location:15.0.1"
    compile "com.google.android.gms:play-services-maps:15.0.1"
}

// Run this once to be able to run the application with BUCK
// puts all compile dependencies into folder libs for BUCK to use
task copyDownloadableDepsToLibs(type: Copy) {
    from configurations.compile
    into 'libs'
}


repositories {
    maven {
        url 'https://maven.google.com/'
        name 'Google'
    }
}

This is my package.json:

"dependencies": {
    "@mapbox/react-native-mapbox-gl": "^6.1.3",
    "axios": "^0.18.0",
    "babel-preset-react-native": "^4.0.1",
    "core-js": "^2.5.7",
    "moment": "^2.22.2",
    "native-base": "^2.8.0",
    "prop-types": "^15.6.2",
    "react": "16.3.1",
    "react-native": "~0.55.2",
    "react-native-animatable": "^1.3.0",
    "react-native-awesome-alert": "^0.4.0",
    "react-native-awesome-alerts": "^1.1.1",
    "react-native-calendar-picker": "^5.22.0",
    "react-native-calendars": "^1.22.0",
    "react-native-credit-card-input": "^0.4.1",
    "react-native-datepicker": "^1.7.2",
    "react-native-elements": "^0.19.1",
    "react-native-fbsdk": "^0.8.0",
    "react-native-image-slider": "^2.0.3",
    "react-native-keyboard-spacer": "^0.4.1",
    "react-native-maps": "^0.21.0",
    "react-native-modal": "^6.5.0",
    "react-native-paypal-android": "0.0.4",
    "react-native-range-datepicker": "^1.9.1",
    "react-native-share": "^2.0.0",
    "react-native-simple-dialogs": "^1.0.0",
    "react-native-slideshow": "^1.0.1",
    "react-native-snap-carousel": "^3.7.4",
    "react-native-star-rating": "^1.1.0",
    "react-native-step-indicator": "0.0.9",
    "react-native-stripe-api": "^0.1.0",
    "react-native-timeline-listview": "^0.2.3",
    "react-native-vector-icons": "^5.0.0",
    "react-navigation": "^2.16.0",
    "react-redux": "^5.0.7",
    "redux": "^4.0.0",
    "redux-promise": "^0.6.0",
    "redux-thunk": "^2.3.0",
    "styled-components": "^4.3.2",
    "tipsi-stripe": "^5.6.0"
  }

When i execute ./gradlew bundleRelease
Comes with success after that i execute react-native run-android --variant=release
This said me an error:
Task 'installReleaseDebug' not found in root project 'mysupercoolapp'.

[react-native-bot]

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[deserthurricane]

Just use the command from an older version of the RN guide:
./gradlew assembleRelease

You will find your .apk file in .../outputs/apk/release