Debug assertion failed

#include <SFML/Graphics.hpp>
#include <iostream>
 
using namespace std;
using namespace sf;
 
int main() {
    
    RenderWindow window(VideoMode(500, 500), "Test!");
    CircleShape MyCircle(100.f);
    MyCircle.setFillColor(Color::Green);
 
    Texture t;
    t.loadFromFile("C:/works/platformer/images/professor_walk_cycle_no_hat.png");
 
    float currentFrame = 0;
 
    Sprite s;
    s.setTexture(t);
    s.setTextureRect(IntRect(0, 192, 64, 64));
    s.setPosition(0, 300);
 
    
    while(window.isOpen()) {
        Event event;
        while(window.pollEvent(event)) {
            if(event.type == Event::Closed)
                window.close();
        }
 
        if(Keyboard::isKeyPressed(Keyboard::Left)) {
            s.move(-0.03, 0);
 
            currentFrame += 0.005;
            if(currentFrame > 9) currentFrame -=9;
 
            s.setTextureRect(IntRect(64*int(currentFrame), 64, 64, 64));
        }
        if(Keyboard::isKeyPressed(Keyboard::Right)) {
            s.move(0.03, 0);
 
            currentFrame += 0.005;
            if(currentFrame > 9) currentFrame -=9;
 
            s.setTextureRect(IntRect(64*int(currentFrame), 192, 64, 64));
        }
 
        window.clear();
        window.draw(s);
        window.display();
    }
 
    return 0;
}