improve err msg & method name.
improve err msg & method name.

jasnow/pry,nju520/pry,scalixte-mdsol/pry,ooohiroyukiooo/pry,tdg5/pry,josue804/debunker,jasnow/pry,caporta/pry,85x14/pry,shockone/pry,bronzdoc/pry,bronzdoc/pry,ngpestelos/pry,shockone/pry,85x14/pry,jasonm23/pry,icebreaker/pry,raeno/pry,jasonm23/pry,scalixte-mdsol/pry,85x14/pry,ooohiroyukiooo/pry,caporta/pry,pvdb/pry,printercu/pry,tdg5/pry,geoffreylitt/pry,nju520/pry,raeno/pry,shockone/pry,pvdb/pry,sideci-sample/sideci-sample-pry,nju520/pry,tdg5/pry,geoffreylitt/pry,jasnow/pry,scalixte-mdsol/pry,icebreaker/pry,jasonm23/pry,gfvcastro/pry,gfvcastro/pry,ngpestelos/pry,caporta/pry,raeno/pry,sferik/pry,printercu/pry,josue804/debunker,sferik/pry,ooohiroyukiooo/pry