I recently tried to visit a person's profile from chat room.
I clicked the link to his profile(points to area51) and the link is dead.
The link points to discuss.area51.stackexchange.com and the link should be area51.meta.stackexchange.com (as pointed by Shadow Wizard in Tavern on meta).
This link points to an HTTPS error page
I am able to reproduce this issue only for users with main profile in area51.
And I think someone missed it in the recent meta url changes from meta.x.se to x.meta.se