Error uploading image: move_uploaded_file() failed to open stream: Permission denied

I study PHP using books
The content is to make a shopping cart, and I stumbled when I tried to upload the product image.
When I add an image,

Warning: move_uploaded_file (./gazou/aspara_yama.jpg): failed to open stream: Permission denied in/Applications/XAMPP/xamppfiles/htdocs/product/pro_add_check.php on line 48

This error will result in
I checked the copied code many times, but I couldn't see the wrong part.
Sharing and permission to upload image folders were read/writeable
Please reply.

move_uploaded_file($pro_gazou['tmp_name'], './gazou/'.$pro_gazou['name']);
print'<img src="./gazou/'.$pro_gazou['name'].'>';
print'<br/>';
print'<input type="hidden" name="price" value="'.$pro_price.'">;;

I copied the code like this, but the image is not displayed and an error appears.