View Compilation Error

0_0_22956209_28799.cpp: In function 'int kmp(iVect&, iVect&)':
0_0_22956209_28799.cpp:37:16: error: invalid initialization of reference of type 'std::string& {aka std::basic_string<char>&}' from expression of type 'iVect {aka std::vector<int>}'
  pmt(_Cmp, next);
                ^
0_0_22956209_28799.cpp:17:6: note: in passing argument 1 of 'void pmt(std::string&, iVect&)'
 void pmt(string& _Cmp, iVect& _Next) {
      ^