Clone Stamp not working?

Question

Adobe Photoshop

Again, Photoshop began to knock out an error:
Could not use the clone stamp because the area to clone has not been defined (Alt-click to define a source point).
Layer one. I hold alt, click, then move the mouse to the place where I want to clone, click again and he knocks it out for me.
I recently created a similar topic, a person appeared who convinced me that the whole thing was in my crooked hands, and asked for a screen. Then I already deleted the project and did not post it. Today I ran into the same thing again - I went to that topic, and that person, apparently, deleted his answer without evaluation (I'm sorry).
Please help me understand the logic of Photoshop, thanks
to upd: the second time I noticed that the problem disappears after 15 minutes on its own (I don’t click anything extra).
Those. he stupidly starts working as it should. What does it mean?

Answer 1

Take it easy. Don't jump on people. In your previous similar question, I advised you to make sure that the layer is selected . The fact that there is only one layer does not mean that it is selected. Is it selected for you?
I looked at your previous question - indeed, the answer was deleted (my advice was in a comment to it, like, maybe you didn’t even have time to see it).