This is actually part of the game. If you go to your bookmarks, you’ll find that only one of them works.
Try it out, then try interacting with that site in whichever way you can to proceed.
If you can't find your problem in the knowledge base, please
submit a bug report.
Thanks for submitting your bug!
Note that due to the popularity of the site, we don't always have the chance to respond personally to every submission.