Update app.py

app.py

@@ -48,7 +48,7 @@ def imageprepare(argv,Single):
         if (nwidth == 0):  # rare case but minimum is 1 pixel
             nwidth = 1
             # resize and sharpen
-        img = im.resize((nwidth, 20), Image.ANTIALIAS).filter(ImageFilter.SHARPEN)
+        img = im.resize((nwidth, 20), Image.Resampling.LANCZOS).filter(ImageFilter.SHARPEN)
         wleft = int(round(((28 - nwidth) / 2), 0))  # caculate vertical pozition
         newImage.paste(img, (wleft, 4))  # paste resized image on white canvas