iwlwifi: Not associated and the session protection is over already

What does this error mean, > Not associated and the session protection is over already... I'm getting this in my logs,

wlp0s20f3: Connection to AP ee:92:90:14:8a:40 lost
wlp0s20f3: aborting authentication with ee:92:90:14:8a:40 by local choice (Reason: 3=DEAUTH_LEAVING)
wlp0s20f3: authenticate with ee:92:90:14:8a:40
wlp0s20f3: 80 MHz not supported, disabling VHT
wlp0s20f3: send auth to ee:92:90:14:8a:40 (try 1/3)
iwlwifi 0000:00:14.3: Not associated and the session protection is over already...

What is "session protection"?