Unsuccessful project sync

Hi guys,I have tried building my first program using android studio 3.2.0 but there are these errors below and I am unable to resolve.
1)Caused by: org.gradle.api.internal.artifacts.ivyservice.DefaultLenientConfiguration$ArtifactResolveException: Could not resolve all artifacts for configuration ‘:classpath’.
2)Gradle sync failed: No cached version of com.android.tools.build:gradle:3.6.2 available for offline mode.
Consult IDE log for more details (Help | Show Log) (18 s 920 ms)
Kindly I need your assistance

Hello,

Android Studio has an offline mode. When Offline Mode is on, Gradle will issue a build failure if you are missing any dependencies, instead of attempting to download them.

To turn off Offline Mode, do the following:

  1. Click File > Settings (on macOS, Android Studio > Preferences ) to open the Settings dialog.
  2. In the left pane, expand Build, Execution, Deployment and then click Gradle .
  3. Under Global Gradle settings, uncheck the Offline work checkbox.
  4. Click Apply or OK for your changes to take effect.

Once all dependencies have been downloaded once, you can enable offline mode again.

go to Tools > Kotlin > Configure Kotlin Plugin Update and update the plugin. then restart studio, and it will sync the gradle on restart.