'Could not get unknown property 'RELEASE_STORE_PASSWORD' for SigningConfig_Decorated{name=debugY

I've been having this problem recently as I'm searching everywhere, also here in stack, I see a lot of different answers.
Does anybody know how to solve this one?

Error:(46, 0) Could not get unknown property 'RELEASE_STORE_PASSWORD' for SigningConfig_Decorated{name=debug, storeFile=C:\Users\— Shahab —\Desktop\master\TMessagesProj\config\release.keystore, storePassword=android, keyAlias=AndroidDebugKey, keyPassword=android, storeType=C:\Users\— Shahab —\Desktop\master\TMessagesProj\config\release.keystore, v1SigningEnabled=true, v2SigningEnabled=true} of type com.android.build.gradle.internal.dsl.SigningConfig. Open File

Solution 1:^[1]

Make sure that you have added the below line in your build.gradle file @ android/app.


def keystoreProperties = new Properties()
def keystorePropertiesFile = rootProject.file('key.properties')
if (keystorePropertiesFile.exists()) {
keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
}

Solution 2:^[2]

Can you share your build gradle file? It seems that there is some problem in your Signing Configs.

Sharing a demo Signing Config code.

signingConfigs {
    release {
        storeFile file('demo.jks')
        storePassword "demo123"
        keyAlias "demo"
        keyPassword "demo123"
    }
}

Solution 3:^[3]

try adding this in your app/build.gradle at the top of android {...}

def keystoreProperties = new Properties()
def keystorePropertiesFile = rootProject.file('key.properties')
if (keystorePropertiesFile.exists()) {
    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
}

Solution 4:^[4]

androidS

Try adding this signature data to gradle.properties:

RELEASE_KEY_PASSWORD = 123456

RELEASE_KEY_ALIAS = releaseKey

RELEASE_STORE_PASSWORD = 123456

RELEASE_STORE_FILE = key/releaseKey.jks

Solution 5:^[5]

I recently face the same error and tried all the solutions in here none worked until I changed entire app/build.gradle with the following code:

def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader('UTF-8') { reader ->
        localProperties.load(reader)
    }
}

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
    flutterVersionCode = '1'
}

def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
    flutterVersionName = '1.0'
}

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {
    compileSdkVersion 31

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    kotlinOptions {
        jvmTarget = '1.8'
    }

    sourceSets {
        main.java.srcDirs += 'src/main/kotlin'
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.samwit.ezhealth"
        minSdkVersion 21
        targetSdkVersion 31
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig signingConfigs.debug
        }
    }
}

flutter {
    source '../..'
}

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}

most importantly is to make sure your targetSdkVersion and your compileSdkVersion are the same also the kotlinversion must be the latest.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1
Solution 2	Jubin Mathai
Solution 3	Zero
Solution 4
Solution 5	Nz Mumbere

'Could not get unknown property 'RELEASE_STORE_PASSWORD' for SigningConfig_Decorated{name=debugY

Solution 1:[1]

Solution 2:[2]

Solution 3:[3]

Solution 4:[4]

Solution 5:[5]