Hi,
your WP REST API is disabled
[root@test1 ~]# curl -XPOST -d "test" https://wscode.pl/wp-json/litespeed/v1/token
<!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 this resource.</p>
</body></html>
it should return 200 OK or 404 not found , not 403 forbidden
best regards,