Update app.py

app.py

@@ -24,7 +24,7 @@ def resize_image_pil(image, new_width, new_height):
     width, height = img.size
 
     width_scale = new_width/width
-    height_scale - new_height/height
+    height_scale = new_height/height
     scale = min(width_scale, height_scale)
     resized = img.resize((int(width*Scale), int(height*Scale)), Image.NEAREST)
     resized = resized.crop((0,0,new_width, new_height))