"Value should be a JSON object." but verified as valid JSON

[dukejustice]

Hello.

I have a situation with a low level discovery that gives error "Value should be a JSON object." while the output is verified correct JSON with http://jsonlint.com/

Running Zabbix 3.0.2. The agent is 3.0.5. Both under RHEL 7.

Here is the JSON:

{
        "data":[

        {"{#LOGFILENAME}":"/logs/HSDEVCENTRAL/20170207.002"},
        {"{#LOGFILENAME}":"/logs/HSDEVCENTRAL/20170206.002"},
        {"{#LOGFILENAME}":"/logs/HSDEVCENTRAL/20170208.001"},
        {"{#LOGFILENAME}":"/logs/HSDEVCENTRAL/20170207.001"},
        {"{#LOGFILENAME}":"/logs/HSDEVCENTRAL/20170209.001"},
        {"{#LOGFILENAME}":"/logs/HSDEVCENTRAL/20170209.002"},
        {"{#LOGFILENAME}":"/logs/HSDEVCENTRAL/20170208.002"},
        {"{#LOGFILENAME}":"/altlogs/HSDEVCENTRAL/20150819.001"}
        ]
}

I have other discoveries that work just fine whit the same output, with values changed.

I also have created a text item with file file's content. And what zabbix picks up is still jsonlint.com verified...

Can anyone point me into a solution?

Thank you very much.

Marc.

[nobodysu]

Think slashes are the issue:

https://www.zabbix.com/documentation/3.0/manual/config/items/item/key

UPD:
You must escape them (bottom of the page):

https://www.zabbix.com/documentation/3.0/manual/discovery/low_level_discovery