Unleashed Syslog Messages.

[WiFi_GURU]

I have master slave setup with Unleashed R550, I am getting this below syslog messages. 
<179> Oct 30 01:38:09 syslog: lwapp_get_sta_stats IEEE80211_RUCKUS_GET_STA_STATS=163 ioctl failed
what does it means? I got an documentation of different syslog messages. 
https://docs.commscope.com/bundle/unleashed-200.10-syslogref/page/GUID-596B496B-F47A-41E7-89CF-C520D...

But I couldn't get an exact match for the above mentioned syslog message.