Error: Assets could not be loaded.

{"/assets/no-optimization/spine/sport/sport.png":"Couldn't load image: /assets/no-optimization/spine/sport/sport.png","/assets/no-optimization/spine/sport/sport.atlas":"Couldn't load texture atlas /assets/no-optimization/spine/sport/sport.atlas page image: /assets/no-optimization/spine/sport/sport.png"}