https://docs.cloud.google.com/appengine/docs/standard/python3/reference/services/bundled/google/appengine/api/datastore_errors/EntityNotFoundError
google.appengine.api.datastore_errors.EntityNotFoundError | App Engine standard environment |...
DEPRECATED: Raised by Get() when the requested entity is not found.
app enginegoogleappengineapidatastore