Update app.py

app.py

@@ -66,6 +66,7 @@ def warp_flow(img, flow):
   
 
 def warp(frame1, frame2, flo_path, blend=0.5, weights_path=None):
+    flo_path = flo_path.cpu().data.numpy()
     flow21 = np.load(flo_path, allow_pickle=True)
     frame1pil = np.array(frame1.convert('RGB').resize((flow21.shape[1],flow21.shape[0])))
     frame1_warped21 = warp_flow(frame1pil, flow21)