При компиляции программа выдает ошибку vector subscript is out of range.Что в коде не так?

#include <vector>
#include <iostream>
#include <sstream>
#include <string>
#include <fstream>
#include <unordered_set>
#include <vector>
#include <set>



using namespace std;




int main()
{
    int node1 = -1;
    int node2 = -1;
    string nodesText;
    int nodesAmount = -1;
    int edgeAmount = -1;
    vector<vector<pair<string, int>>> graph;

    cout << "Enter the nodes amount" << endl;
    cin >> nodesAmount;
    cout << "Enter the edge amount" << endl;
    cin >> edgeAmount;

    graph.resize(nodesAmount);
    int counter = 0;
    vector<string> edges;
    edges.resize(edgeAmount);
    set<int> nodes;
    while (counter != edgeAmount)
    {
        cout << "Enter the nodes. Format:node 1 node 2" << endl;
        cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
        getline(cin, nodesText, '\n');
        node1 = std::stoi(nodesText.substr(0, ' '));
        node1 -= 1;
        auto pos = nodesText.find(' ');
        node2 = stoi(nodesText.substr(pos));
        node2 -= 1;
        nodes.insert(node1);
        nodes.insert(node2);
        cout << "Enter edge character" << endl;
        cin >> edges[counter];
        graph[node1].emplace_back(make_pair(edges[counter], node2));
        graph[node2].emplace_back(make_pair(edges[counter], node1));
        ++counter;
    }
    cout << endl;
    vector<int> nodesOutput;
    for (auto itr : nodes)
    {
        nodesOutput.push_back(itr);
    }

    int counter2 = 0;
    while (edges.size() > counter2)
    {
        cout << edges[counter2] << " " << nodesOutput[counter2]+1 << " " << nodesOutput[counter2+1]+1 << endl;
        ++counter2;
    }
    for (int i = 0; i < nodesAmount; i++)
    {
        cout << i+1;
        for (int j = 0; j < graph[i].size(); j++)
            cout << " " << graph[i][j].first;
        cout << endl;
    }
    return 0;

}