invalid byte sequence in UTF-8

[sharp]

1.9.3p374 :001 > require 'linkser'
 => true 
1.9.3p374 :002 > l = Linkser.parse 'http://sports.163.com/nba/'
 => #<Linkser::Objects::HTML:0x007f92019e99c8 @url="http://sports.163.com/nba/", @last_url="http://sports.163.com/nba/", @head=#<Net::HTTPOK 200 OK readbody=true>, @options={}> 
1.9.3p374 :003 > l.title
encoding error : input conversion failed due to input error, bytes 0xC4 0x4E 0x42 0x41
 => "NBA,NBAֱҥ,\xD7钭ㄒ档"