Help me please aseprite devs

I changed the theme of my Aseprite but I accidentally deleted the theme file and when I open the program it appears
File skins/aseprite-studio-theme-master/sheet.png not found
and i already ran it as an administrator i already reinstalled the theme i already closed it in the task manager and i restarted the pc and i couldn’t open the program

“skins” sounds like it’s related to an old version of Aseprite, as the new term is theme, but you should just be able to delete the theme then start Aseprite. It will just switch to the default Aseprite theme.