Why do I get the message "There is a problem with your library record. Please see a librarian." when I try to place a hold?

Why do I get the message “There is a problem with your library record. Please see a librarian.” when I try to place a hold?

This message appears if you have reached the limit on the number of holds you can have. Currently holds are limited to 20 for resident patron types.

North Orange Branch is closed for repair. A date for reopening has yet to be established. Learn more about the North Orange
Branch closing >