ActionViolation when using LockBits

Question

I am trying to get the pixels a bit faster than one could when using .GetPixel() but I have found myself that it throws an exception with a 0,0 index with the right LockImageMode.

Exception

Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

public async Task<IList<Color>> GetColorStream( )
    {
        (_Width, _Height, PixelFormat pixelFormat) = await GetDimensions(_Path);
        List<Color> pixels = new();
        if (pixelFormat is not PixelFormat.Format32bppRgb or not PixelFormat.Format24bppRgb or not PixelFormat.Format32bppRgb)
            throw new InvalidOperationException("Cant operate with ess than 24bpps");

         _Data = await GetBitmapData(_Width, _Height, pixelFormat, ImageLockMode.ReadWrite);

        if(pixelFormat is PixelFormat.Format24bppRgb or PixelFormat.Format32bppRgb)
        {
            for (int i = 0; i < _Width; i++)
                for (int j = 0; j < _Height; j++)
                {
                    int stride = i * _Data.Stride / 3 + j;
                    (byte R, byte G, byte B, byte A) = (Marshal.ReadByte(_Data.Scan0, stride), Marshal.ReadByte(_Data.Scan0, stride + 1),
                                                      Marshal.ReadByte(_Data.Scan0, stride + 2), 0);
                    pixels.Add(new Color(R, G, B, A));
                }
        }
        else if(pixelFormat == PixelFormat.Format32bppArgb )
        {
            for (int i = 0; i < _Width; i++)
                for (int j = 0; j < _Height; j++)
                {
                    int stride = i * _Data.Stride / 4 + j;
                    (byte R, byte G, byte B, byte A) = (Marshal.ReadByte(_Data.Scan0, stride), Marshal.ReadByte(_Data.Scan0, stride + 1),
                                                      Marshal.ReadByte(_Data.Scan0, stride + 2), Marshal.ReadByte(_Data.Scan0, stride + 3));
                    pixels.Add(new Color(R, G, B, A));
                }
        }
        image.UnlockBits(_Data);
        image = null;
        return pixels;
    }```