Update app.py

app.py

@@ -1,10 +1,11 @@
 import os
-#os.system('pip install detectron2@git+https://github.com/facebookresearch/detectron2.git')
+os.system('pip install detectron2@git+https://github.com/facebookresearch/detectron2.git')
 credentials_kwargs={"aws_access_key_id": os.environ["ACCESS_KEY"],"aws_secret_access_key": os.environ["SECRET_KEY"]}
 
 # work around: https://discuss.huggingface.co/t/how-to-install-a-specific-version-of-gradio-in-spaces/13552
 os.system("pip uninstall -y gradio")
 os.system("pip install gradio==3.4.1")
+os.system("pip install packaging>=20.0,<22.0")
 os.system(os.environ["DD_ADDONS"])
 
 import time