Godot HTML5 not working

This is probably a desperate cry at this point though I have been vigorously trying to figure out why my game won't work with the HTML format. It is the appropriate size and despite this, the game will come up as error 404 upon trying to play it in the browser format. I've only got 6 minutes so it's unlikely I'll even get an answer before time runs out but after pulling my hair out for an hour trying to fix this, it's my only option. unknown[1].png