An open-air festival in the city of Trenčín in Slovakia has been cancelled prematurely after a storm devastated the site and several visitors were injured. “Based on the available information, inspecting all the structures could not be completed in less than 24 hours, which makes it impossible to continue with the festival programme,” the organizers announced on social media on Saturday. As the day progressed, the festival site gradually emptied, the Aktuality.sk news website reported. The Pohoda (Comfort) festival at the Trenčín airport grounds was supposed to run from Thursday to Saturday ev…