Add a Custom Button to a Contact

Hello Community!

I'm facing an issue with this challenge and I wonder if anyone else has experienced the same problem.

Challenge:

Create a custom button for the Contact object:

• Label: Google Info
• Name: Google_Info
• The button should open a link to:  
   
  https://www.google.com/search?q={!Contact.Name}  
  (where {!
  Contact.Name} is the current contact's name)

Add the custom button to the Contact Layout page layout.

After many attempts, I keep getting the error: 

"We couldn't find a button named 'Google_Info' on the 'Contact Layout' page layout."

I’ve created the button and added it to the Contact Layout. I’m sharing a screenshot as proof.

Any ideas on what might be wrong or what I could be missing?

Thanks in advance!Contact Layout