Kotlin Koans with EduTools plugin: “Failed to laun

Question

I'm trying to follow the Kotlin Koans tutorial in Android Studio by installing the EduTools plugin and choosing Kotlin Koans course.

Everything works fine, but when I try "Check Task" in the Task Description panel, I get this error:

Failed to launch checking

I also tried the plugin with Intellij IDEA and got the same error.

Using:

• Android Studio 3.2 with EduTools 2.0-2018.1-443
• Intellij IDEA 2018.2.3 with EduTools 2.0-2018.2-906

Answer 1

I also got this issue. Finally, I 've resolved it by configuring my gradle bin to PATH.

Here are series of commands to configure Gradle into you Path.

# cd ~
# touch .bash_profile  
# open -e .bash_profile 

//to edit your bash_profile ,you need to input your local path to bash_profile,like this:

export GRADLE_HOME=/Users/PCNAME/.gradle/wrapper/dists/gradle-4.5-bin/bgd6nrwgxy3inh8yed6gmsvbx/gradle-4.5/ --- use your own grade path to replace them.

export PATH=${PATH}:${GRADLE_HOME}/bin

# source .bash_profile
# gradle -v //  you will see your gradle version if your configure successfully.

Restart Android Studio, try to run your EDUTOOLS.

Answer 2

In my case I had a problem related to JDK 11 and I had JDK 8 installed. This is how I fixed the problem:

Go to Settings / Build, Execution, Deployment / Build Tools / Gradle. At Gradle JVM select JDK 11 path.

It worked for me.

Answer 3

Maybe could try IntelliJ Idea Edu which comes already bundled with EduTools.

Answer 4

I received the same error. I closed Android Studio and created a new Koans project thinking I must have done something wrong. This time I received a new build time error when trying to "Check". None of this made sense so I just shut down Android Studio, reopened the Koans project I just created and clicked "Check". Everything seemed to work now.

Answer 5

Had the same problem. Just Sharing how I fixed this problem.

• I opened build.gradle of my Kotlin Koans Project and scrolled down to where wrapper was defined.
• Pressed play icon right next to it.
• Was greeted with an error
  Error:Failed to open zip file. Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.) Re-download dependencies and sync project (requires network) Re-download dependencies and sync project (requires network)
• Followed Answer by Hamid

To resolve this issue close Android Studio and delete the following directory's content, necessary files will be downloaded on IDE's next launch.

macOS: ~/.gradle/wrapper/dists

Linux: ~/.gradle/wrapper/dists

Windows: C:\Users\your-username.gradle\wrapper\dists

• Restarted Android Studio and it worked like a charm.

Answer 6

I found the problem in IDE logs as @NullReference suggested.

INFO - ecker.gradle.GradleCommandLine - Failed to launch checking 
Cannot run program "./gradlew" (...) No such file or directory

I had configured the project (Settings / Build, Execution, Deployment / Build Tools / Gradle) to use a local Gradle distribution and it seems that EduTools plugin always looks for the Gradle Wrapper, so I just had to generate a Wrapper for project and configure it to use my local Gradle distribution:

gradle wrapper --gradle-distribution-url file:///path/to/local/gradle-4.6-all.zip