<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=utf-8" http-equiv=Content-Type> <META name=GENERATOR content="MSHTML 8.00.6001.18876"> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT size=2 face=宋体>No package "mozilla-plugin" found.</FONT></DIV> <DIV><FONT size=2 face=宋体></FONT> </DIV> <DIV><FONT size=2 face=宋体>I have tried many package, but the error still be there.</FONT></DIV> <DIV><FONT size=2 face=宋体></FONT> </DIV> <DIV><FONT size=2 face=宋体>Which package should I install?</FONT></DIV></BODY></HTML>