diff -urN ../z-push-2.6.4+0.orig/src/backend/searchldap/searchldap.php ./src/backend/searchldap/searchldap.php
--- ../z-push-2.6.4+0.orig/src/backend/searchldap/searchldap.php	2021-06-25 11:55:30.000000000 +0300
+++ ./src/backend/searchldap/searchldap.php	2023-06-18 23:33:25.211238000 +0300
@@ -47,6 +47,9 @@
         // Connect
         if (defined('LDAP_SERVER_URI')) {
             $this->connection = @ldap_connect(LDAP_SERVER_URI);
+            if ($this->connection === false) {
+                throw new StatusException("BackendSearchLDAP(): Unable to create LDAP object. May be incorrect LDAP_SERVER_URI '" . LDAP_SERVER_URI . "'. Search aborted.", SYNC_SEARCHSTATUS_STORE_SERVERERROR, null, LOGLEVEL_FATAL);
+            }
             @ldap_set_option($this->connection, LDAP_OPT_PROTOCOL_VERSION, 3);
         }
         else {