After creating a new Google Cloud project and following all steps carefully from this documentation, gcloud app deploy yields the following error:

I have a page (a new user signup page) which is being attacked. While I work on the fix and security, is there a way I can disable this one page/url/script from within the console rather than deploy a change?

I have a Google App Engine instance located in the us-west2 zone. I recently added a load balancer to prevent connections using TLS versions lower than 1.2, for security.