Error when trying to login

I am facing the following error when I try to login.
Anyway to resolve?

You will need to look at your gateway log files. Through your gateway web interface if you can, otherwise via the wrapper log file.

Could you please guide me? I have no idea

This happened after security configuration was carried out and once I tried to open another project through the config app.

image

the solution is here. This creates separate administrator password with username
Password reset