React Native: Execution failed for task ':app:checkDebugDuplicateClasses'

Question

I am getting the next error appearing on running npx react-native run-android. It came out of nowhere - no changes have been committed.

Execution failed for task ':app:checkDebugDuplicateClasses'.
A failure occurred while executing com.android.build.gradle.internal.tasks.CheckDuplicatesRunnable

Duplicate class kotlin.collections.jdk8.CollectionsJDK8Kt found in modules jetified-kotlin-stdlib-1.8.0 (org.jetbrains.kotlin:kotlin-stdlib:1.8.0) and jetified-kotlin-stdlib-jdk8-1.7.20 (org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.7.20)

Duplicate class kotlin.internal.jdk7.JDK7PlatformImplementations found in modules jetified-kotlin-stdlib-1.8.0 (org.jetbrains.kotlin:kotlin-stdlib:1.8.0) and jetified-kotlin-stdlib-jdk7-1.7.20 (org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.7.20)
     
Duplicate class kotlin.internal.jdk7.JDK7PlatformImplementations$ReflectSdkVersion found in modules jetified-kotlin-stdlib-1.8.0 (org.jetbrains.kotlin:kotlin-stdlib:1.8.0) and jetified-kotlin-stdlib-jdk7-1.7.20 (org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.7.20)
     
Duplicate class kotlin.internal.jdk8.JDK8PlatformImplementations found in modules jetified-kotlin-stdlib-1.8.0 (org.jetbrains.kotlin:kotlin-stdlib:1.8.0) and jetified-kotlin-stdlib-jdk8-1.7.20 (org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.7.20)
     
Duplicate class kotlin.internal.jdk8.JDK8PlatformImplementations$ReflectSdkVersion found in modules jetified-kotlin-stdlib-1.8.0 (org.jetbrains.kotlin:kotlin-stdlib:1.8.0) and jetified-kotlin-stdlib-jdk8-1.7.20 (org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.7.20)

What I tried:

1. Follow again the installation steps on official react native documentation page: https://reactnative.dev/docs/environment-setup

    brew install node
    brew install watchman
    brew tap homebrew/cask-versions
    brew install --cask zulu11
   

2. Uninstall and install Android Studio

3. Set kotlinVersion = "1.8.0" in android/build.gradle:

    buildToolsVersion = "32.0.0"
    minSdkVersion = 21
    compileSdkVersion = 33
    targetSdkVersion = 33
    // here
    kotlinVersion = "1.8.0"
   

It looks like if I get rid of "react-native-inappbrowser-reborn": "^3.7.0" library the error is gone and the app launches successfully. But what if I need react-native-inappbrowser-reborn in my project?

Thank you mates in advance!

Answer 1

This is caused by the Kotlin plugin update. You can fix it easily by using configure below:

dependencies {
    implementation fileTree(dir: "libs", include: ["*.jar"])
    //noinspection GradleDynamicVersion
    implementation "com.facebook.react:react-native:+"  // From node_modules
    implementation 'com.android.support:multidex:2.0.1'
    implementation "androidx.swiperefreshlayout:swiperefreshlayout:1.0.0"

    // Add this line here
    implementation platform('org.jetbrains.kotlin:kotlin-bom:1.8.0')

    //...omit some code
}

You can refer this one: Kotlin Document

Answer 2

Add this to android/app/build.gradle

configurations.all {
resolutionStrategy {
    eachDependency {
        if ((requested.group == "org.jetbrains.kotlin") && (requested.name.startsWith("kotlin-stdlib"))) {
            useVersion("1.6.10")
        }
    }
}

}

Answer 3

For me, it was a combination of the react-native-iap and the react-native-onesignal packages that was causing the issue.

Upgrading react-native-onesignal didn't work, so I upgraded react-native-iap as far as I could go without breaking changes, and for me, that was v7.5.6.

After upgrading iap to 7.5.6, I also had to add this to my ../android/app/build.gradle file for it to compile:

defaultConfig {
    ...
    missingDimensionStrategy 'store', 'play'
}

Edit: I think what's happening is that one of your packages has a loose dependency, which caused an unexpected update. So each case could be different.

Answer 4

I was having this for @shopify/flash-list. There is a github issue [1] for it.

To fix it, add kotlinVersion = "1.8.10" on your build.gradle file

buildscript {
    ext {
        buildToolsVersion = "33.0.0"
        minSdkVersion = 21
        compileSdkVersion = 33
        targetSdkVersion = 33
        kotlinVersion = "1.8.10" // 👈🏻 this to be added
        ndkVersion = "23.1.7779620"
    }
    repositories {
        google()
        mavenCentral()
    }
    dependencies {
        classpath("com.android.tools.build:gradle")
        classpath("com.facebook.react:react-native-gradle-plugin")
        classpath ("com.google.gms:google-services:4.3.15")
    }
}

References

1: https://github.com/Shopify/flash-list/issues/862

Answer 5

This fixed my issue

android/build.gradle

buildscript {
    ext {
        buildToolsVersion = "33.0.0"
        minSdkVersion = 21
        compileSdkVersion = 33
        targetSdkVersion = 33
        kotlinVersion = "1.7.22" // add this
        ndkVersion = "23.1.7779620"
    }
    ...
}

Answer 6

In your android/app/build.gradle file set kotlin-stdlib to use the same verion

for example:

configurations.all {
    resolutionStrategy {
        eachDependency {
            if ((requested.group == "org.jetbrains.kotlin") && (requested.name.startsWith("kotlin-stdlib"))) {
                useVersion("1.7.20")
            }
        }
    }
}