There's a problem creating a NEW link to share the document after the initial link has been created.
If you open an exiting document that has been shared with a link, resave the file with a new name, make changes, then try to create a new link, you will get an error.
Build 28.0 on a Mac Book Pro M1 Max
If I close and restart Illustrator it will then be able to create the new review link.
I use this function every week on an ongoing project and it nearly always fails without restarting.
Can you please share more information, so the team can start investigating this?
— what is your exact build number?
— can you record a video of the issue happening?
— can you share this file in any other way?