Add the name attribute with the value catphotourl to your text field.

In order for a form’s data to be accessed by the location specified in the action attribute, you must give the text field a name attribute and assign it a value to represent the data being submitted. For example, you could use the following syntax for an email address text field: <input type="text" name="email">.

Add the name attribute with the value catphotourl to your text field.

Just like in the example where name="email", in this step, you need to make the name=“catphotourl”

Thank you. I don’t know what
I was doing wrong but after trying this it finally worked.