In that case, you'd better try resetting Bridge's preferences.
Hopefully that works, because if not, the next option is to reset Photoshop's preferences.
The arrows indicate that they are aliases, not the real files, don't they?
Where is your G drive backed up to? Have you checked the backup drive to see if you can open them from there?
Well, you should definitely try it in Photoshop first. If, after a few times, you feel it's not working for you, then cough up for a subscription.
https://www.damiensymonds.net/2012/05/create-your-own-wall-guides.html