VS C++ project migrated to CodeBlocks is not working - c++

Question

Recently I had to migrate one of my small turn-in projects from VS to CodeBlocks.
In VS the project worked and run just fine.
Now that I have moved my .cpp and .h to CB it runs to an error and I can't see why, because I am referring to the Menu.h.
Main:
#include <iostream>
#include "Menu.h"
#include "Bulk.h"
#include "Parcel.h"
#include <fstream>
using namespace std;
int main()
{
Menu m1 = Menu();
m1.Start();
}
Menu.cpp:
#include "Menu.h"
#include "Material.h"
#include "Bulk.h"
#include "Parcel.h"
#include <iostream>
#include <string>
#include <deque>
using namespace std;
deque<Parcel> Parcels;
deque<Bulk> Bulks;
void Menu::Start()
{
string selection = "F";
for (int i = 0; i < 1;)
{
cout << "*****Warehouse Manager*****\n";
cout << "1 - Add Material\n";
cout << "2 - List Materials\n";
cout << "3 - Add Stock\n";
cout << "4 - Decrease Stock\n";
cout << "E - Exit\n";
cin >> selection;
if (selection == "1")
{
AddMaterial();
}
if (selection == "3")
{
AddStock();
}
if (selection == "2")
{
PrintAll();
}
if (selection == "4")
{
RemoveStock();
}
if (selection == "E")
{
i++;
}
}
}
void Menu::RemoveStock()
{
string code;
double stock;
cout << "Please enter ID Code:\n";
cin >> code;
cout << "Please enter value:\n";
cin >> stock;
for (int i = 0; i < Parcels.size(); i++)
{
if (Parcels[i].GetEAN() == code)
{
Parcels[i].DecreaseStock(stock);
}
}
for (int i = 0; i < Bulks.size(); i++)
{
if (Bulks[i].GetIDCode() == code)
{
Bulks[i].DecreaseStock(stock);
}
}
}
void Menu::PrintAll()
{
for(int i = 0; i < Parcels.size(); i++)
{
Parcels[i].Print();
}
for (int i = 0; i < Bulks.size(); i++)
{
Bulks[i].Print();
}
}
void Menu::AddStock()
{
string code;
double stock;
cout << "Please enter ID Code:\n";
cin >> code;
cout << "Please enter value:\n";
cin >> stock;
for (int i = 0; i < Parcels.size(); i++)
{
if (Parcels[i].GetEAN() == code)
{
Parcels[i].IncreaseStock(stock);
}
}
for (int i = 0; i < Bulks.size(); i++)
{
if (Bulks[i].GetIDCode() == code)
{
Bulks[i].IncreaseStock(stock);
}
}
}
void Menu::AddMaterial()
{
string selection = "F";
cout << "Please choose:\n";
cout << "1 - Parcel\n";
cout << "2 - Bulk\n";
cin >> selection;
if(selection == "1")
{
string name;
string company;
string ean;
double pieceprice;
cout << "Please enter material name:\n";
cin >> name;
cout << "Please enter the company:\n";
cin >> company;
cout << "Please enter the EAN ID:\n";
cin >> ean;
cout << "Please enter the price:\n";
cin >> pieceprice;
Parcel p1 = Parcel(name, company, ean, pieceprice);
Parcels.push_front(p1);
}
if (selection == "2")
{
string name;
string company;
string idcode;
string unit;
double unitprice;
cout << "Please enter material name:\n";
cin >> name;
cout << "Please enter the company:\n";
cin >> company;
cout << "Please enter the ID:\n";
cin >> idcode;
cout << "Please enter the unit:\n";
cin >> unit;
cout << "Please enter price per 1 unit:\n";
cin >> unitprice;
Bulk b1 = Bulk(name,company,idcode,unit,unitprice);
Bulks.push_front(b1);
}
}
Menu.h:
#pragma once
#include "Material.h"
#include "Bulk.h"
#include "Parcel.h"
#include <iostream>
#include <string>
#include <deque>
using namespace std;
class Menu
{
public:
void Start();
void AddMaterial();
void AddStock();
void PrintAll();
void RemoveStock();
private:
};
The error is the following:
Do you guys have any idea what is going on? How come that it runs perfectly in VS but not in CB?
Thank you!