Azure example fails to deploy

Following the instructions with these steps I get an error:

npm i -g azure-cli
azure login
azure account show
azure ad sp create -n NAME -p PASSWORD
azure role assignment create --objectId bad1234dad5678cab -o Contributor

azure account show gives the expected result at this point, and I set up my environment variables.

and then in the examples/azure-node-simple-http-endpoint directory, after editing serverless.yml to include my Azure credentials.

npm install
serverless deploy

But the end result is a failure I can only see in the Azure web console. "Website with given name azfx-node-http already exists"

The serverless debug output only includes this: 'At least one resource deployment operation failed. Please list deployment operations for details. Please see https://aka.ms/arm-debug for usage details.'

Start in examples/azure-node-simple-http-endpoint and inspect serverless.yml alongside the documented npm, Azure CLI, and serverless deploy steps. Reproduce the deployment and use the Azure web console's deployment operations, as suggested by the debug output, to determine why the website name already exists; done means the example deploys successfully or clearly documents the required name change.