My game is for the GMTK Jam, so I need a solution in the next few hours. I uploaded a game to itch.io with p5.js (which is what I'm using for the GMTK Jam) last year and it worked but now it won't. I've tried last night, left it there for 10-20 minutes and it was still stuck. I've tried again several times this morning and it didn't work.

Can you link to the game?

Edit: I believe I see the game. It appears your zip file is corrupt, and contains all 0 byte files.

Hope that helps