Hi @sultan.mohd2023,
Thank you for your update.
I have research into the error you encountered and found this knowledge solution for your reference:
https://community.auth0.com/t/error-unable-to-issue-redirect-for-oauth-2-0-transaction/108012
Essentially, there is a typo in your code that is causing the Unable to issue redirect to OAuth 2.0 transaction error.
Keep me posted on how this goes for you.
Thanks,
Rueben