View Compilation Error

0_0_21962271_27791.cpp: In member function 'void dictionary::init()':
0_0_21962271_27791.cpp:48:45: error: 'struct dictionary::Node' has no member named 'vis'
         for(int i=0;i<maxn*32;i++) Tree[sz].vis.clear();
                                             ^
0_0_21962271_27791.cpp: In member function 'void dictionary::ins(int, int)':
0_0_21962271_27791.cpp:58:23: error: 'struct dictionary::Node' has no member named 'vis'
             Tree[now].vis.insert(id);
                       ^
0_0_21962271_27791.cpp: In member function 'int dictionary::find(int, int, int)':
0_0_21962271_27791.cpp:72:35: error: 'struct dictionary::Node' has no member named 'vis'
                 if(!judge(Tree[t].vis,l,r)) to^=1;
                                   ^