android - Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain -

my build.gradle android app has become quite lengthy. chanced upon plugin called gradle-lint-plugin , configured properly. in documentation says

run ./gradlew fixgradlelint automatically fix build scripts

but upon running error: not find or load main class org.gradle.wrapper.gradlewrappermain.

does have android studio using own gradle plugin? not have gradle installed systemwide.

edit: not wish install gradle systemwide - there way within android studio only?

sounds wrapper not setup correctly. missing wrapper jar.

$ ls gradle/wrapper gradle-wrapper.jar        gradle-wrapper.properties 

when in gradle/wrapper see gradle-wrapper.jar?

if install gradle can generate jar command: $ gradle wrapper