LDAP and Symfony : Could not complete search with dn - symfony

Question

I try to pass my application to Symfony. I have a problem with authentication.
With PHP, I used this code to check connection to active directory
$ldap_host = "%MY AD HOST%";
$ldap_dn = cn=srv_ldap,ou=Service,ou=Applicatifs,ou=Utilisateurs,ou=DomaineInterne,dc=mydomain,dc=pri";
$ldap_usr_dom = '#mydomain.pri';
$ldap = ldap_connect($ldap_host);
ldap_set_option($ldap,LDAP_OPT_PROTOCOL_VERSION,3);
ldap_set_option($ldap,LDAP_OPT_REFERRALS,1);
// verify user and password
if($bind = #ldap_bind($ldap, $user.$ldap_usr_dom, $password)) {
With Symfony, I used the Symfony Component Ldap :
config\services.yaml
[...]
Symfony\Component\Ldap\Ldap:
arguments: ['#Symfony\Component\Ldap\Adapter\ExtLdap\Adapter']
Symfony\Component\Ldap\Adapter\ExtLdap\Adapter:
arguments:
- host: %MY AD HOST%
port: 389
#encryption: tls
options:
protocol_version: 3
referrals: false
config\packages\security.yaml
...
[...]
providers:
ad_ldap:
ldap:
service: Symfony\Component\Ldap\Ldap
base_dn: cn=srv_ldap,ou=Service,ou=Applicatifs,ou=Utilisateurs,ou=DomaineInterne,dc=mydomain,dc=pri
default_roles: ROLE_USER
uid_key: sAMAccountName
firewalls:
main:
pattern: ^/
anonymous: true
lazy: true
form_login_ldap:
provider: ad_ldap
service: Symfony\Component\Ldap\Ldap
dn_string: 'sAMAccountName={username}#mydomain.pri'
check_path: security_login
login_path: security_login
csrf_token_generator: security.csrf.token_manager
default_target_path: blog_index
I have an error LdapException with the message :
Could not complete search with dn "cn=srv_ldap,ou=Service,ou=Applicatifs,ou=Utilisateurs,ou=DomaineInterne,dc=mydomain,dc=pri", query "(sAMAccountName=jane_admin)" and filters "*". LDAP error was [1] Operations error.
I try to replace "dn_string: 'sAMAccountName={username}#mydomain.pri'" with different things, but I still have this message...