I don't think there is a way to upload files directly in these kinds of comments, so too much effort really, for such a small thing, that I can bothered to actually do that
The save file itself would need decoding, to edit, so that gonna be near impossible. The maps themselves are technically a bunch of json files, so can be edited with any text editor like notepad or similar(though this will only work as a fix, for any playthrough where you have not yet been in there during that stage), the syntax is NOT very userfriendly, so finding the right stuff to change... I would say is likely gonna be near impossible too, but map ID is 249, so the map file with that number in it, in the www/data folder, if you despite that do want to give it a try