Content aware fill greyed out
Hi there, new to PS but I know that something must be selected, and that content aware fill does not work on an adjustment layer or a smart object. I don't believe the layer I am working on is either of these.
I even started a fresh project in photoshop and all I have done is added the photo in and made it fit the size of the page.
When i click select > Subject >
then Edit, Fill , stroke, and content aware fill does not allow me to click, it is greyed out.
Then I tried Shift backspace and i get a popup that says "Could not complete your request because the smart object is not directly editable."
I don't know what this means or how to solve it. Please help. Thanks!

