当我通过Core（在C端）向网络发送请求时，出现了这样的错误。我不知道到底发生了什么。 你能给我一个想法吗？
10/09/18 19:25:01|3|6813/9283|get_attdir response: <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>400 Bad Request</title>
</head><body>
<h1>Bad Request</h1>
<p>Your browser sent a request that this server could not understand.<br />
</p>
<hr>
<address>Apache/2.2.15 (Red Hat) Server at apac01.csf Port 80</address>
</body></html>
10/09/18 19:25:01|2|6813/9283|couldn't fax msg: /tmp/fax/fileqCjPFV (could not proxy fax)