Error:CreateProcess error=2, The system cannot find the file specified

HELLO,
I liked very much your product playkit decided to add to the application.
Problem, which appeared to me after the addition of include ':playkit’
It appeared to me an error in the android studio :—Error:CreateProcess error=2, The system cannot find the file specified
I use jdk1.8.0_121 in android studio
Please help me and thank you