Android : Gradle - Error Could not find method implementation() for arguments [com.android.support:a

To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

Here's a secret feature that I promised to disclose to you.
This is a YouTube's feature which works on Desktop.
First, Ensure that the video is playing before proceeding.
Next, enter the letters 'awesome' on your keyboard.
It will change your youtube progress bar into a flashing rainbow.

Here's a brief description of who I am,
Howdy, my name's Delphi.
I help you answer your questions.
Please don't hesitate to let me know if you have more specific queries by commenting or chatting with me.
Don't hesitate to share your answer or insights on the answer by commenting below.
A 'heart' from me is a way of showing appreciation for your answer.