Couldn't generate a key pair in this browser. Try again.
Generating the RSA key pair an endpoint-backed Flow needs happens entirely in your browser (Web Crypto) - this only fails on very old/unsupported browsers.
Try a current, up-to-date browser.
Try generating the key pair again.
Still stuck? Send AVX-3046 to hello@theavoxai.com along with what you were doing when it happened.