How to delete project folders

so i want to delete project folders that the project are finished, but when i try to it says that the folder is not found

You have to use your operating system file manager to delete the project folder from the disk. If you want to remove the project from being listed in Shotcut. You can select it in the Recent panel and press the Delete or Backspace key on your keyboard. Next, restart Shotcut, and it is no longer listed.