Gradle sync failed in android due to kotlin
Answer #1 66.6 %First, try to update your gradle to:
classpath 'com.android.tools.build:gradle:3.2.0'
And in your dependencies, use the stable version:
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:design:28.0.0'
Since you said you're not using kotlin, Updating the kotlin plugin will help
Go to: File -> Settings -> Plugins
do update the kotlin then restart.