title: One of workers crashed. Cause: 'float' object cannot be interpreted as an integer
body: <p>I just installed KCC so I can read manga to my Kindle paperwhite 5 however im having an issue where it says that one of the codes is in float cannot be interpreted as integer. I tried to traceback and modify the codes by adjusting the classes from float to int but it seems that im doing it wrong. It would be highly appreciated if you could assist me.</p>
  <pre><code> Traceback:
    File &quot;/home/jpvergara/kcc/kindlecomicconverter/comic2ebook.py&quot;, line 563, in imgFileProcessing
      img.autocontrastImage()
    File &quot;/home/jpvergara/kcc/kindlecomicconverter/image.py&quot;, line 261, in autocontrastImage
      self.image = ImageOps.autocontrast(Image.eval(self.image, lambda a: 255 * (a / 255) ** gamma))
    File &quot;/usr/lib64/python3.10/site-packages/PIL/Image.py&quot;, line 3100, in eval
      return image.point(args[0])
    File &quot;/usr/lib64/python3.10/site-packages/PIL/Image.py&quot;, line 1676, in point
      return self._new(self.im.point(lut, mode))
  </code></pre>