UNITE with Tomorrowland, a popular EDM Festival in Barcelona, Spain, evacuated all 22,000 of their attendees after a stage caught fire Saturday night. According to Pitchfork and the Spanish site El Periodico, no one reported any serious injuries, but many people were treated for anxiety. Steve Aoki was set to headline the event, which was scheduled to go until 3 a.m.

Festival organizers posted a statement on their Facebook page, citing “a technical malfunction” as the reason for the fire. They also said, “Thanks to the professional intervention of the authorities all 22.000 visitors were evacuated safely and without reports of injuries. Authorities will follow up and continue the investigation with the local Spanish organizer of UNITE.”