Gradle - Executor singleton not started

Question

When doing ./gradlew assembleDebug gradle gives me this error :

Build exception
Executor singleton not started

This was working fine with a project I cloned from github, until I deleted it and cloned a new one.

Answer 1

I was using Gradle Daemon to speed up the builds, I suspected the exception had something to do with the Daemon so I restarted it and now it's working fine. Here's the command to stop the daemon :

./gradlew --stop

The next time you do a build it starts automatically.