Tue Feb  7 23:43:52 2017: [ notice] Starting server version 8,1,1,10, pid 11817
Tue Feb  7 23:47:57 2017: [warning] LDAP (simple) bind failed: Invalid credentials
Tue Feb  7 23:47:57 2017: [crit   ] Cannot instantiate user plugin: Failure connecting any of the LDAP servers
Tue Feb  7 23:47:57 2017: [crit   ] Unable to instantiate user plugin
Tue Feb  7 23:47:57 2017: [warning] Failed to authenticate user "Stephan" from "192.168.1.10" using program "apache2"