Error Login LDAP - by: benzaoual.hamza

Hello,
I have an issue with LDAP configuration. I can't login with LDAP User. Please check the log and Global Parameters :

connection with LDAP user: Yes
LDAP base dn : DC=MYDOMAIN,DC=com
LDAP host : My Domain Server IP Address
LDAP port : 389
LDAP version : 3
LDAP user : CN=FirstName LastName ,CN=Users,DC=My Domain,DC=com
LDAP password : Admin user password
LDAP user filter : %USERNAME%
default profile for Ldap users : Project Members


Log file :
2017-11-15 12:38:20.302 ***** ERROR ***** [V6.4.4] ERROR *****
2017-11-15 12:38:20.302 ***** ERROR ***** [V6.4.4] on file '/var/www/html/project/model/UserMain.php' at line (1113)
2017-11-15 12:38:20.302 ***** ERROR ***** [V6.4.4] cause = ldap_search(): Search: Bad search filter

thanks
Hamza