Gradle not working

[adex720]

It just keeps giving this error:

FAILURE: Build failed with an exception.

• Where:
  Build file 'C:\Users\adex\Desktop\Ev3FromJson\build.gradle' line: 27

• What went wrong:
  An exception occurred applying plugin request [id: 'com.github.bdeneuter.mindstorms.ev3', version: '1.2.0']

Failed to apply plugin [id 'com.github.bdeneuter.mindstorms.ev3']
Could not find method leftShift() for arguments [com.github.bdeneuter.mindstorms.gradle.Mindstorms$_apply_closure1$_closure5@4d58b221] on task ':setMa
nifestAttributes' of type org.gradle.api.DefaultTask.

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 5s

text on line 27: (inside plugins {})
id "com.github.bdeneuter.mindstorms.ev3" version "1.2.0"