我用的ossdz2.0的插件，这两天怎么出错了

Discuz! System ErrorcURL resource: Resource id #51; cURL error: Couldn't resolve host 'http:' (6)
PHP Debug

No.	File	Line	Code
1	admin.php	57	require(%s)
2	source/admincp/admincp_ossdz.php	74	discuz_ftp->ftp_size(%s)
3	source/class/discuz/discuz_ftp.php	124	ALIOSS->is_object_exist(%s, %s)
4	source/oss/sdk.class.php	1201	ALIOSS->get_object_meta(%s, %s, Array)
5	source/oss/sdk.class.php	1031	ALIOSS->auth(Array)
6	source/oss/sdk.class.php	594	RequestCore->send_request()
7	source/oss/lib/requestcore/requestcore.class.php	825	break()

请高手帮我看看是怎么回事