Duplicacy init to google cloud storage asks me to visit a URL which doesn't exist

$ duplicacy init disk-images-gcs gcs://redacted/redacted
Enter the path of the Google Cloud Storage token file (downloadable from https://duplicacy.com/gcs_start) or the service account credential file:

Duplicacy seems to redirect to Duplicacy, without giving me a storage token file.

Seems like it’s broken recently I guess?

Maybe I want

https://duplicacy.com/gcp_start