Gradle sync failed: Cause: com/android/build/gradle/BaseExtension

user_1924086 0
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I downloaded a project from github and then tried to build it.

But, once Gradle ran, the event log of Android Studio (2.3.3) showed me this:

Gradle sync failed: Cause: com/android/build/gradle/BaseExtension
Consult IDE log for more details (Help | Show Log)

And also

Error:(18, 0) com/android/build/gradle/BaseExtension
<a href="openFile:C:\Users\Gustavo\AndroidStudioProjects\simpletask-android\app\build.gradle">Open File</a>

enter image description here

It seems like Gradle couldn't find Kotlin in the right spot but I don't know how to change this.

Kotlin is installed and updated (to version 1.1.3).

enter image description here

It is also configured as a dependency of the "app" module in the project.

enter image description here

But, as the last image shows, the version of the external library that the project sees is 1.0.6 and not 1.1.3.

enter image description here

Is that the problem? How can I change this external library?

android-gradle-plugin kotlin android-studio android
4 Answers

Similar to @mbonnin, but in the opposite direction, I had to move the build tools dependency from app/build.gradle to the root build.gradle.

dependencies {
  classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
  classpath 'com.android.tools.build:gradle:3.0.0-beta6'
}
user_5931700

I encountered this error when I wanted to add Hilt dependencies.

Code below was part of my android project's root build.gradle file.

buildscript {
    ext.kotlin_version = "1.7.10"
    ext.hilt_version = "2.38.1"
    repositories {
        google()
        mavenCentral()
    }
    dependencies {
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath "com.google.dagger:hilt-android-gradle-plugin:$hilt_version"
    }
}

for me,after i added classpath 'com.android.tools.build:gradle:7.1.3' to the dependencies block, the problem was solved.

After adding,below code is the whole buildscript block

buildscript {
    ext.kotlin_version = "1.7.10"
    ext.hilt_version = "2.38.1"
    repositories {
        google()
        mavenCentral()
    }
    dependencies {
        //you should change the version to the one that suits your project 
        classpath 'com.android.tools.build:gradle:7.1.3'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath "com.google.dagger:hilt-android-gradle-plugin:$hilt_version"
    }
}
user_135473640
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