'Invalid redirect URL' for Cloudflare Access on custom domain

import { getIdentity } from "@cloudflare/pages-plugin-cloudflare-access/api";

...

const identity = await getIdentity({
                jwt: headers().get("Cf-Access-Jwt-Assertion")!,
                domain: "https://<pages subdomain>.cloudflareaccess.com",
        })

import { generateLoginURL } from "@cloudflare/pages-plugin-cloudflare-access/api";

...

const loginURL = generateLoginURL({
            redirectURL: request.url,
            domain: "https://<pages subdomain>.cloudflareaccess.com",
            aud: "<aud>",
        });
        return NextResponse.redirect(loginURL);