How to access desktop folder from Dash when uploaded app to Heroku server for deployment?

This is my code so far, how to access the desktop folder when code is running from Heroku server online?

#check if Drilling data folder exists:
desktop = os.path.expanduser("~/Desktop") #Desktop directory
folders = os.listdir(desktop)

if ‘Drilling data’ in folders:
database = r’/Drilling data/’
path = desktop + database
database_list = sorted([f for f in os.listdir(path) if not folder_is_hidden(f)])
else: #database does not exist, use demo version:
database_list = [‘Not Available’]