Can connect the ldap server,but can not login in with the ldap user

I can connect the ldap server,but can not login in with the ldap user.
Who can help me to solve the problem?

Try reading this first. I had a lot of trouble with LDAP (on Windows AD), but this discussion helped.

I close SYNCHRONIZE GROUP MEMBERSHIPS, then I can use userno or userno@domain.com to login in.

And, in LDAP server ,first name and last name can’t be empty!!!

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