Gradle error: Write access is allowed from event dispatch thread only in Android Studio

Question

After updating Android Studio to version 2.2 (on Windows 10) and somehow next morning I received such error when gradle built on any project:

Write a

Answer 1

that didn't work for me, i ran a 'gradle clean build' command, i figured out that there's a conflict in a line in the gradle, deleted it and sync project (as in this pic)