You're not the only one with this problem. No solution found at the moment unfortunately.

Here is a list of threads and bug reports with the same issue, with the game crashing in cities area you can keep an eye on in case something happens in the next days.


https://forum.square-enix.com/ffxiv/...to-a-main-city

https://forum.square-enix.com/ffxiv/...-Old-Sharlayan

https://forum.square-enix.com/ffxiv/...or-gold-Saucer

https://forum.square-enix.com/ffxiv/...oad-from-login

https://forum.square-enix.com/ffxiv/...wntrail-launch