When a test fails, click the red button to see which test(s) are failing and text to help you correct the issue.
Be sure and read more than just the first line of the failing message. The ability to read and comprehend error messages is a skill you’ll need to acquire as a developer. Ask questions on what you don’t understand.
The failing message says;
Inside the form element, I can select a field from one or more groups of radio buttons. Each group should be grouped using the name attribute. Each radio button must have a value attribute.
All your radio-buttons must have a value attribute : expected 3 to equal 0
AssertionError: All your radio-buttons must have a value attribute : expected 3 to equal 0
Do you understand what the test is looking for?