Harbor Invalid user name or password in port forward

Question

I am unable to login to harbor portal after installing it in kubernetes and port forwarding it. Harbor-core service is not accessible and I am not sure if I should accesss harbor core or harbor portal. When i port forward harbor portal, it never logins even with the credentials provided in the values.yml file. What am I doing wrong? I have tried different browsers and incognito as well. There should be no ambiguity regarding external url and exposing because I am trying to first access it locally with port forwarding and even then, it is not authenticating.

I have already tried all the solutions provided online such as removing quotes from password field in values.yaml and enable/disable tls/https etc nothing is working.