Error:Traffic policy does not exist

Error:Traffic policy does not exist Filesystem error (2):File or directory does not exist Error: The event 'onDisplay' does not exist!是什么意思 "ERROR:42P01:table \"q_temptable1\" does not exist" user does not exist Does not exist Perfection does not exist Index does not exist D:\c++\Cpp1.cpp(2) : error C2871: 'std' : does not exist or Table does not exist.File or directory does not exist This fil does not exist Folder 'Denglu' does not exist.