I am not able to login to Things stack

I have forked the TTS for the balena cloud. and I have set up the RPi4 and then tried to connect to things stack but I am getting login error as “There was an error causing the login to fail. This might be due to server-side misconfiguration or a browser-cookie problem. Please try logging in again. If the error persists, please contact an administrator.
We’re sorry for the inconvenience.”
Can someone help me with this. I tried with different browsers to just to check if its something related to cookies, but It doesn’t work.