Adding a Radio Button Lesson 44--- New Legacy Responsive Web Design

I followed the instructions as described but the code does not work. Here is my code:

Indoor
<input type=text" name=“catphotourl” placeholder=“cat photo URL” required>

I also tried

Indoor: Indoor
<input type=text" name=“catphotourl” placeholder=“cat photo URL” required>

which did not work. Please explain what my error is. As you can see I added the code above the existing input type =“text”.

Thank yoy

Please post a link to the challenge.