ERROR: ldap_bind (): Unable to bind to server: Invalid credentials in UserMain.php at line 1200
This issue means invalid user / password send for identified user.
This means that
- host / port / .... is correct
- connection with User LDAP (cn=projeqtor,ou=ADMINISTRATEUR,ou=Utilisateurs,dn=GASNY,dn=loc) is correct
sAMAccountName=%USERNAME% generally works, but does not seem to work in your case.
Possibly UJsername you enter (on projector login form) is not the expected one.
You white that connection for ""CN=Sebastien Lavie,OU=INFORMATIQUE,OU=Utilisateurs,DC=GASNY,DC=loc" work,
I hope you don't use this string as login on projeqtor...