Update app.py

app.py

@@ -10,7 +10,12 @@ from ultralytics import YOLO
 @spaces.GPU
 def model_cov():
     model_pt = YOLO("best.pt")
-    model_pt.export(format="engine")  # creates 'yolov8n.engine'
+    model.export(
+        format="engine",
+        dynamic=True,  
+        batch=8,  
+        workspace=4,  
+    )
     model =YOLO("best.engine")
     
     return model