Use of deleted Function when pushing class object to std::vector? - c++

Question

I have two classes as shown below.
When i try to populate a vector of Entity objects in the Spawner Entity class,it gives me this error
error: use of deleted function 'Entity::Entity(Entity&&)'
I cant figure out why it wont call the constructor and push the class object on the vector
Also, I Have inherited the Entity Class in the Spawner Entity
Entity.h
#pragma once
#include<iostream>
#include<vector>
#include<SFML/Window.hpp>
#include<SFML/Graphics.hpp>
class Entity
{
private:
sf::RenderWindow win;
sf::RectangleShape enemy;
public:
Entity();
void InitializeEntity();
void Update(const float* DeltaTime);
void Render(sf::RenderWindow& mWindow);
};
Entity.cpp
Entity::Entity()
{
InitializeEntity();
}
void Entity::InitializeEntity()
{
enemy.setPosition(rand()%255+1,rand()%255+1);
enemy.move(rand()%255+1,rand()%255+1);
enemy.setSize(sf::Vector2f(50.f,50.f));
sf::Color color(rand()%255+1,rand()%255+1,rand()%255+1);
enemy.setFillColor(color);
enemy.setOutlineColor(sf::Color::White);
enemy.setOutlineThickness(2.f);
}
void Entity::Render(sf::RenderWindow& mWindow)
{
mWindow.draw(enemy);
}
SpawnerEntity.h
#pragma once
#include<iostream>
#include<vector>
#include<SFML/Window.hpp>
#include<SFML/Graphics.hpp>
#include "Entity.h"
class SpawnerEntity:public Entity
{
private:
float SpawnTimer;
float SpawnTimerMax;
int MaxEnemies;
bool done;
//std::vector<Entity> SpawnedEnemies;
public:
SpawnerEntity();
void InitializeEntity();
void SpawnSubEntities(std::vector<Entity> &enemies);
bool CheckSpawnDone();
};
SpawnerEntity.cpp
#include "SpawnerEntity.h"
SpawnerEntity::SpawnerEntity()
{
SpawnTimerMax=1.f;
SpawnTimer=SpawnTimerMax;
MaxEnemies=10;
done=false;
}
bool SpawnerEntity::CheckSpawnDone()
{
return done;
}
void SpawnerEntity::SpawnSubEntities(std::vector<Entity> &enemies)
{
for(int i=0;i<MaxEnemies;i++)
{
std::cout << "SPAWNED" << '\n';
enemies.push_back(Entity()); //this line here gives me the above error
}
done=true;
}