I also have this ones:
WebGL warning: texImage: Requested size at this level is unsupported.
ahh yes that error would stop the game. I’m sorry but it looks like your browser’s texture size limit is too small to load the game. You should update your browser, if that doesn’t work then I believe Chrome should have a higher texture page size limit.
Its also possible that your Firefox browser isn’t using the correct GPU which explains the limited texture size limit. https://bugzilla.mozilla.org/show_bug.cgi?id=1310222
Note that I’m using Firefox to play the game with no issue (my laptop has 16gb ram)