Good afternoon and thank you for posting on the Final Fantasy XIV Technical Support Forums.

Is this the only place you've experienced the error? Does it occur every time you try to use the summoning bell?

If so, you may want to try a reinstall of the game. When you do, make sure to remove the locally-saved data folder (located My Documents > My Games > Final Fantasy XIV). Be sure to make a backup of this just in case it doesn't resolve the issue.

We hope we can be of assistance in helping you enjoy the exciting world of Final Fantasy XIV!