The streets around the city’s vaccination site at the Long Beach Convention Center were packed with cars Monday afternoon after an error in the state’s MyTurn system led to an overbooking of vaccination appointments, according to city staff.

“This state error resulted in more appointments than available COVID-19 vaccine for the day,” Jennifer Rice Epstein, spokeswoman for the city, said in an email.

The congestion on Ocean Boulevard and Shoreline Drive, as well as Pine Avenue, was so intense that the city sent out a traffic alert, informing Long Beach residents that the area would likely be seeing heavy traffic until at least 6 p.m.

Some who had made appointments simply gave up.

Epstein said those who had made appointments but were unable to receive a vaccine Monday would be notified with information on scheduling a new appointment.

“City staff is working with the State to ensure that the My Turn system is operating properly moving forward and only providing appointments for the amount of vaccine that is available,” she said.