TheButterBuilder

Hi all! I'm new to minehut, and may just be stupid, but how do I successfully upload a map I downloaded to play with friends to my server? I keep going to the World area of the dashboard, uploading the .zip, and getting the error "An error occurred. Please try again." Is there something I can do? I've tried uploading several different .zip folders, and none work. Any help would be appreciated. Thanks!