How to resolve an "Invalid key in stanza [WMI:Patching]" error that occurs after defining a WMI input on universal forwarder?

I have a WMI Input defined on a universal forwarder and I get the following error while starting Splunk, and of course nothing gets indexed from this input **Checking prerequisites... Checking mgmt port [8089]: open Checking conf files for problems... Invalid key in stanza [WMI:Patching] in C:\Program Files\SplunkUniversalForwarder\etc\apps\its-440-Splunk_TA_windows_6_4_2\local\inputs.conf, line 292: wql (value: select 'Description'', HotfixID', 'InstalledOn' from 'Win32_QuickFixEngineering').** I did not find any hints in the documentation, i also tried an example WQL query from the docs and got the same error. I try the following Input: [WMI:Patching] interval = 10 wql = select Description, HotfixID, InstalledOn from Win32_QuickFixEngineering disabled = 0 index = testing the search is working: C:\Program Files\SplunkUniversalForwarder\bin>splunk-wmi.exe -wql "select Description, HotfixID, InstalledOn from Win32_QuickFixEngineering" ***SPLUNK*** index= source="WMI:unspecified" sourcetype="WMI:unspecified" ---splunk-wmi-end-of-event--- 20161101223526.526996 Description=Update HotFixID=KB3176936 InstalledOn=8/25/2016 wmi_type=unspecified ---splunk-wmi-end-of-event---