Xwiki don't start after enable ldap

Hi users,
I was trying to add ldap support to my wiki installation.
After set the settings under /etc/xwiki/xwiki.cfg and restart the tomcat, now I only get an blank page after the “wiki starting” message and an error in the tomcat log. When I try to remove the ldap config, then I only see the blank page again, but without an error in the log. It looks like, enabling ldap has damage the config in the database of the wiki and its spaces.

Environment: CentOS7
xwiki: 11.10.10
Java: java11
Tomcat9

Error when let it run with the ldap config:

2020-10-22 13:17:28,737 [https://foo/bin/view/Main/] TRACE x.c.l.XWikiLDAPAuthServiceImpl - Starting LDAP authentication
2020-10-22 13:17:28,738 [https://foo/bin/view/Main/] DEBUG x.c.l.XWikiLDAPAuthServiceImpl - The provided user is null. We don’t try to authenticate, it probably means the user is in non logged mode.
2020-10-22 13:17:28,779 [https://foo/bin/view/Main/] DEBUG x.c.l.XWikiLDAPAuthServiceImpl - XWikiUser: null

Have some any hint, what goes wrong?