I’m trying to deploy in App. Engine with no luck. I have followed the comments but I get this error:
Updating service [default] (this may take several minutes)...failed.
ERROR: (gcloud.app.deploy) Error Response: 
Application startup error! Code: APP_CONTAINER_CRASHED
Warning: the config option 'server.enableCORS=false' is not compatible with 'server.enableXsrfProtection=true'.
As a result, 'server.enableCORS' is being overridden to 'true'.
In order to protect against CSRF attacks, we send a cookie with each request.
To do so, we must specify allowable origins, which places a restriction on
cross-origin resource sharing.
If cross origin resource sharing is required, please disable server.enableXsrfProtection.
Usage: streamlit run [OPTIONS] TARGET [ARGS]...
Error: Invalid value: File does not exist: app.py
Is secure to disable XsrfProtection?
There is another way?