to fix this you have to go to graphic folder and inside that folder there will be another folder called system, go in there too and then you have to paste/drag the "window.png" image in there
the image is already in the game folder but it is in other folders you have to find it or download the image i did post, make sure is called "Window.png" and paste it in "system" folder
there is two system folders but the one you're looking its inside the "graphics" folder.
hope this helps you guys ❤ and sorry the english is not my native language.✌
