Using one argument since using two is deprecated since php 8.3.0

src/models/ldap_utils.php

@@ -5,7 +5,7 @@ $ini = parse_ini_file('../includes/config.ini');
 function get_ldap_conn() {
     try {
         global $ini;
-        $ldapconn = ldap_connect($ini['hostname'], $ini['port']);
+        $ldapconn = ldap_connect(sprintf("ldap://%s:%s", $ini['hostname'], $ini['port']));
         ldap_set_option($ldapconn, LDAP_OPT_PROTOCOL_VERSION, 3);
         ldap_set_option($ldapconn, LDAP_OPT_REFERRALS, 0);
         ldap_start_tls($ldapconn);