Login is not possible, HTTP 426 Upgrade required

[nils-jansen]

Using the following versions:

• Ubuntu 20.04
• node 16.16.0
• npm 8.11.0
• realm-cli 2.6.0

CLI was successfully installed with npm i mongodb-realm-cli --location=global.

As instructed by the MongoDB App Services UI, I ran realm-cli login --api-key <key> --private-api-key <private-key>.
This yields the following output:

Expected behaviour: successful login with newly generated credentials.

[makesitgo]

This appears to be an issue with the local environment and it sounds like HTTP/2 protocol is not supported on that machine (fwiw, login works fine on my end with all recent versions of the CLI)

[nils-jansen]

Even though this error message was displayed, login was possible. All I had to do was exit gracefully, not using Ctrl C.