Такая же проблема. /home/bitrix/www - нет никаких .htaccess
2023-Sep-19 15:17:56 Работа с сокетами (check_socket): Fail
Connection to ssl://site.ru:443 Success
== Request ==
GET /bitrix/admin/site_checker.php?test_type=socket_test&unique_id=d630071af148c99979135c09205f56a7 HTTP/1.1
Host: site.ru
== Response ==
HTTP/1.1 403 Forbidden
Server: nginx
Date: Tue, 19 Sep 2023 12:17:56 GMT
Content-Type: text/html; charset=iso-8859-1
Content-Length: 300
Connection: keep-alive
== Body ==
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>403 Forbidden</title>
</head><body>
<h1>Forbidden</h1>
<p>You don't have permission to access /bitrix/admin/site_checker.php
on this server.</p>
<hr>
<address>Apache Server at site.ru Port 443</address>
</body></html>
==========
2023-Sep-19 15:17:56 Работа с сокетами (check_socket): Fail
Connection to ssl://site.ru:443 Success
== Request ==
GET /bitrix/admin/site_checker.php?test_type=socket_test&unique_id=d630071af148c99979135c09205f56a7 HTTP/1.1
Host: site.ru
== Response ==
HTTP/1.1 403 Forbidden
Server: nginx
Date: Tue, 19 Sep 2023 12:17:56 GMT
Content-Type: text/html; charset=iso-8859-1
Content-Length: 300
Connection: keep-alive
== Body ==
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>403 Forbidden</title>
</head><body>
<h1>Forbidden</h1>
<p>You don't have permission to access /bitrix/admin/site_checker.php
on this server.</p>
<hr>
<address>Apache Server at site.ru Port 443</address>
</body></html>
==========