No instance of function template "std::make_pair" matches the argument list

Is it legal to use unordered_map for a pair type like <int, vector<vector<int>>>? Visual Studio warns me "No instance of function template "std::make_pair matches the argument list" in line 16 (map.insert(make_pair<int, vector<vector<int>>>(i + m, tt))):

void test(vector<int>& nums) 
{
    unordered_map<int, vector<vector<int>>> map;
    unordered_map<int, unordered_set<int>> map2;
    vector<vector<int>> results;

    for (int i = 0; i < nums.size(); i++)
    {
        for (int m = i + 1; m < nums.size(); m++)
        {
            if (!map.count(i + m))
            {
                vector<int> t{ i, m };
                vector<vector<int>> tt;
                tt.push_back(t);
                map.insert(make_pair<int, vector<vector<int>>>(i + m, tt));
                map2.insert(make_pair<int, unordered_set<int>>(i + m, unordered_set<int>(i - m)));
            }
            else if (map2.at(i + m).count(i - m) || map2.at(i + m).count(m - i))
            {
                continue;
            }
            else
            {
                map.at(i + m).push_back(vector<int>{i, m});
                map2.at(i + m).insert(i - m);
            }
        }
    }

}