I'm having a similar problem but I use tiramisu instead of haxchii. For me it says like "Confirm complete WUP files are in the folder". Anyone know how to fix it with tiramisu?
btw i feel this a good time to remind you guys that sea of thieves was made by rare, who also made DKC1-3 and DK64, alongside banjo kazooie and conker's bad fur day