Wireshark-users: [Wireshark-users] invalid request

From: mustafa alhussona <mustafarajimusa@xxxxxxxxx>
Date: Tue, 13 Mar 2012 21:57:41 +0300
hi
i installed squid server and i have invalid request, so i decided to check the traffic using the wireshark, please can you tell me what does this line mean

[protocols in frame: eth:ip:tcp:http:data]

please what is the meaning of data ok i know the ip:tcp:http is for http request, but what data protocol mean
and there is a new field describes this data the field called Hypertext Transfer Protocol and contain data of length 56 byte

why this request is considered invalid request

thanks best regards

the packet discription is