LDAP - Error de connexion LDAP

Hi,
in logs, I can find :2022-10-21 10:14:56.206

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DEBUG

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User->authenticate : access through LDAP
2022-10-21 10:14:56.207

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DEBUG

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User->authenticate : LDAP authenticate
2022-10-21 10:14:56.207 ***** ERROR ***** [V10.0.6] Ldap not installed on your PHP server. Check php-ldap extension or you should not set $paramLdap_allow_login to "true"

So my desk
PRETTY_NAME="Debian GNU/Linux 11 (bullseye)"
NAME="Debian GNU/Linux"
VERSION_ID="11"
VERSION="11 (bullseye)"
VERSION_CODENAME=bullseye
ID=debian
Package: phpldapadmin
Version: 1.2.6.3-0.2
Status: install ok installed

in file /etc/php/7.4/apache2/php.ini ,I have extension=ldap.so

But I have un message error " Ldap not installed on your PHP server. Check php-ldap extension or you should not set $paramLdap_allow_login to "true""
Help me please to find a solution.