Show validation error is not working

Good evening. I appreciate the effort in this community .
I am using cakephp version 4.
I havve controller product and i put filed image inside it , I set valdiator for images and I set the view and controller but the problem here when I make deug i see the error showes but it is not showen inside the form .

Any suggestion for that ,thank you

I’m not 100% sure, but you may need to manually display it using something like a Flash.

Thank you, sir, but I try still the same problem

What code are you trying to display the errors?