Could not find com.android.tools.build:gradle:6.1.1. code example

Example: Could not find com.android.tools.build:gradle:6.1.1.

Plugin version ----> Required Gradle version

 3.1.0+ ----> 4.4+
 3.2.0  ----> 3.2.1 4.6+
 3.3.0  ----> 3.3.2 4.10.1+
 3.4.0+ ----> 5.1.1+
 4.0.1  ----> 6.1.1