LDAP login error

We are using the LDAP / Active Directory plugin in plone 5.2. For some users, login works very well, for others it doesn't.

Has anyone had a similar problem?

I assume you want to debug the LDAP plugin in this case and figure out where and why it happens as it happens,

Yes too.

I was unable to find login logs to try to investigate the causes.

Another detail is that we run in container dockers.

logs usually don't help. you need to try to reproduce the error on a local installation. debugging such issues inside a container-only environment is a nightmare and almost impossible.

if you set the log level to debug the whole stack including LDAP is very verbose.

Would that be at a local facility?