The redirectUri passed to /authorize must also be passed to /token for Custom login

[vyassu]

User accesses the app, then being redirected to okta login form, successfully logins and then redirected to /implicit/callback url and then this error appears.

Looks like an issue with okta-auth-js, please update to latest version of the library to fix this issue

[swiftone]

@vyassu - You are correct, this is an issue that can happen when using PKCE flow and one specific version of our okta-auth-js library. A fresh install (or override your lock file) should grab the latest bugfix version already.