ASSERT failure in QList::operator[]: "index out of range" - qt5

Question

I want to put the data of all the pixels of my image into a two-dimensional "uchar" vector, so that I can then manipulate this data, but the error does not allow me to do this.Error: ASSERT failure in QList::operator[]: "index out of range", file C:\Qt\6.2.1\msvc2019_64\include\QtCore/qlist.h, line 403
header
#include <QPixmap>
#include <QVector>
class LoadedImage
{
public:
LoadedImage(QString path);
QImage getCopyOfLoadedPILImage();
void loadImage();
void loadImageData();
QVector<uchar*> imageData ;
int getWidth();
int getHeight();
private:
QString path_;
QImage *loadedImage;
double width, height;
bool loadedImageIsOpen;
};
#endif // LOADEDIMAGE_H
cpp
#include "loadedimage.h"
LoadedImage::LoadedImage(QString path) : path_(path)
{
loadedImageIsOpen = false;
}
QImage LoadedImage::getCopyOfLoadedPILImage(){
return loadedImage->copy();
}
int LoadedImage::getHeight(){
return height;
}
int LoadedImage::getWidth(){
return width;
}
void LoadedImage::loadImage(){
loadedImage = new QImage(path_);
loadedImageIsOpen = true;
width = loadedImage->size().width();
height = loadedImage->size().height();
}
void LoadedImage::loadImageData(){
if(loadedImageIsOpen == false)
loadImage();
// unsigned char * rawData = loadedImage->bits();
int rawDataCount = 0;
int slice = 0;
for(int y = 0; y < height - 1; y++){
for(int x = 0; x < width - 1; x++){
if(slice < 3){
imageData[x][y] = loadedImage->pixel(rawDataCount, slice);
}
rawDataCount++;
slice++;
}
}
}