Update app.py

app.py

@@ -152,6 +152,8 @@ def scale_box(box, scale):
 
 @spaces.GPU
 def generate_sgg(image):
+    global model
+    
     device='cuda' if torch.cuda.is_available() else "cpu"
     if next(model.parameters()).device != torch.device(device):
         model = model.to(device)