Katy Perry experienced a frightening onstage mishap Friday night during her Lifetimes Tour stop at the Chase Center in San Francisco. While performing her hit song “Roar,” the pop star was seated atop a large butterfly-shaped prop that was designed to fly above the crowd.

A scary moment occurred late in Katy Perry’s sold-out concert at Chase Center in San Francisco on Friday. It happened during one of the Perry’s (roughly) 278,433 aerial/high-rise sequences in the show, as the superstar boarded a giant black mechanical butterfly and soared off high above the crowd during the anthem “Roar.”