UNEXPECTED TOKEN r IN JSON at position 0

Dear Team,

We are facing "unexpected token r in json at position 0" error when we try to login after providing the username and password, on inspection we found the error "as attached".

Did notice similar community post https://community.creatio.com/questions/unexpected-token-json but this is not similar to my issue. Here we are not able to navigate to home page after providing the username and password.

Question : Is there a way that user profile is affected and how to fix this issue?

Thanks in advance!