Hey I'm guessing you wanted to upload this game onto itch.io. Before exporting on Godot, make sure the file name is set to "index.html" instead of "Bwif's Flower's Journey.html". 
Then itch will prompt you to set the game as playable on web where people can then easily play it.
Flick the button that says "This file will be played on the browser" to TRUE
Hope this helps