Hi there. Took me a moment to notice what the message really says: while your archive is small enough overall, one of the files in it runs into a different safety limit. Can't remember off-hand what it is for individual files though, but check your game for an unusually large file, probably an asset.
You can also contact support and ask for the limit to be increased. A lot of players will have trouble running your game though. Best to optimize it if you can.