missing template arguments before and variable or field 'printVector' declared void

I got these two errors and I can not figure it out. I basic hit a coders block.

variable or field 'printVector' declared void and missing template arguments before

#include <iostream>
#include <vector>
#include <cctype>
using namespace std;

void printVector(vector<string> vec);

int main() {

vector<string> ivec;


cout<<"Please your sequence of words and ctrl-z to stop"<<endl;
string input;

while(getline(cin, input)){
    ivec.push_back(input);
}

cout<<"Your input is: \n";

for(std::vector<string>::iterator it = ivec.begin(); it != ivec.end(); ++it ){
    cout<<*it<<"";
  }

cout<<"Your input changed to upper case: "<<endl;
printVector(ivec);
return 0;
}


void printVector(vector<string> vec){
for(auto &v: vec){
    for(auto &c: v)
        cout<<toupper(c)<<"";
    }

}