138.0.1x64 build of Firefox and no errors in the console, just a couple "Referrer policy" messages about ignoring "no-referrer-when-downgrade" for youtube embed and whatever ' html-classic .itch .zone/html/13647658/index .html ' is
119.0.6045.199x64 Chromium launched it almost instantly though...
I tried to reproduce the issue on my end using the same version of Firefox, and the game launches without any problems... Maybe one of your extensions like AdBlock or the cache is interfering with the game's launch
After the jam ends, I'll upload builds for Windows, macOS, and Linux