Resolves Zabbix 3.0.1 discovery Agent System.uname Invalid

Using 3.0.1 for Discovery when using agent, detection system.uname, has been no way to find. Open the debug log background has been an error. The log is as follows:

In Get_value_agent (): Host: ' Addr: ' 10.130.130.80 ' key: ' System.uname ' conn: ' Unknown '
End of Get_value_agent (): Network ERROR
Discovery:item[system.uname] error:a TLS connection is configured Tobe used with agent but support
For TLS is note compiled into server

But if I add the host manually and then add the item manually, there is no problem:

It becomes a

In Get_value_agent (): Host: ' Host001test ' addr: ' 10.130.130.80 ' key: ' System.uname ' conn: ' unencrypted '
sending [System.uname]
Get value from agent result: ' xxxxxxxxxxxxxxxx '

I tried it with Zabbix_get and it was normal. Just discovery.

The question bothered me for 3 days, and after looking for the answer, I found out that it was a bug because someone had already reflected it.
https://support.zabbix.com/browse/ZBX-10571
April 20, Zabbix released the latest version of the 3.0.2, clearly has been positioning the problem and resolved. Hope to encounter this problem friend upgrade as soon as possible to 3.0.2, less walk stray.