[FIXED] Some Kotlin libraries attached to this project were read by a newer Kotlin compiler and can't be read. Please update Kotlin Plugin

Issue

I am facing an error:

Some Kotlin libraries attached to this project were read by a newer Kotlin compiler and can't be read. Please update Kotlin Plugin

I just created an application and started facing this error: href="https://i.stack.imgur.com/uHEZd.png" rel="nofollow noreferrer">

The Kotlin plugin shows the following:

I tried to change ext.kotlin_version:

My build.gradle:

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    ext.kotlin_version = "1.4.32"
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:4.1.1"
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

My build.gradle(app):

plugins {
    id 'com.android.application'
    id 'kotlin-android'
}

android {
    compileSdkVersion 31
    buildToolsVersion '30.0.1'

    defaultConfig {
        applicationId "com.yousufjamil.myj"
        minSdkVersion 16
        targetSdkVersion 31
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = '1.8'
    }
}

dependencies {

    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
    implementation 'androidx.core:core-ktx:1.8.0'
    implementation 'androidx.appcompat:appcompat:1.4.2'
    implementation 'com.google.android.material:material:1.6.1'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
    testImplementation 'junit:junit:4.+'
    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
}

I would appreciate any help. Thank You!

Solution

You need to update almost everything, I believe.

currently for Gradle we have com.android.tools.build:gradle:7.2.1

coming to Kotlin, the current version is 1.6.21

repository jcenter() is deprecated and has been replaced by mavenCentral()

If you try to use jcenter() it will give a warning

JCenter Maven repository is no longer receiving updates: newer library versions may be available elsewhere

Also, check if there are any updates available for Android Studio.

Answered By - lets start coding
Answer Checked By - David Goodson (JavaFixing Volunteer)