I've been playing FFXIV through Steam for almost a year now with no trouble, but tonight when I tried to launch the game I got an error that read

Script error

An error has occured in the script on this game.
Line: 1
Char: 1
Error: Invalid character
Code: 0
URL: https://launcher.finalfantasyxiv.com...47b3.bundle.js

I did look into previous threads concerning similar error codes, but majority of solutions invovled Internet Explorer which has now been completely replaced by Microsoft Edge.

So far I have

- Deleted and re-downlaoded Steam
- Deleted and re-downloaded FFXIV (just the launcher though since I can't get past the title screen)
- Cleared Edge's cache multiple times
- Set Edge's tracking prevention to Balanced
- Set exceptions for the game on both antivirus program and Firewall settings
- Restarted my computer multiple times while testing solutions above

Thank you in advance.