Hello @dhawalmodi49, welcome to the forum!
Please, fill this template:
I have read intro post: About the Installation Issues category
I have read the tutorials, help and searched for similar issues
I provide relevant information about my server (component names and versions, etc.)
I provide a copy of my logs and healthcheck
I describe the steps I have taken to trouble shoot the problem
I describe the steps on how to reproduce the issue
Can you explain a bit more precisely, is it the first time you are trying to log in into passbolt, was it working before? Which browser are you on? Have you tried to clear the browser cache?
Also, could you gives us the healthcheck output
su -s /bin/bash -c "/usr/share/php/passbolt/bin/cake passbolt healthcheck" www-data