error message in errlog

Hello!
	What is an error message
"org.w3c.tools.resources.FramedResource@/Doc: This resource handle Pathinfo 
but the request has no PATH_INFO state." in errlog file?

----------<Somchai Limsiroratana>lsomchai@e7sun-1.kais.kyoto-u.ac.jp----------
W Agric. Process Engineering and Technology Lab.   H c/o Tawa sama         
W Dept. of Bio-production Engineering,             H Tanaka-asukai-cho 60  
W Division of Environmental Science and Technology H Sakyo-ku, Kyoto       
W Graduate School of Agric. Science,               H 606-8226 JAPAN        
W KYOTO UNIVERSITY, Kyoto, JAPAN 606-01            H Tel:075-703-8169

Received on Monday, 20 July 1998 04:56:19 UTC