Fix overload

app.py

@@ -1,4 +1,5 @@
 import os
+os.system('pip install gradio --upgrade')
 os.system('pip install git+https://github.com/huggingface/transformers.git --upgrade')
 os.system('pip install pyyaml==5.1')
 # workaround: install old version of pytorch since detectron2 hasn't released packages for pytorch 1.9 (issue: https://github.com/facebookresearch/detectron2/issues/3158)
@@ -96,5 +97,6 @@ iface = gr.Interface(fn=process_image,
                      description=description,
                      article=article,
                      examples=examples,
-                     css=css)
+                     css=css,
+                     enable_queue=True)
 iface.launch(debug=True)