Update app.py

app.py

@@ -13,7 +13,7 @@ def convert_image(image,mode,ratio):
     return "download.jpg"
   else:
     # print(f"width:{image.width},height:{image.height}")
-    intRatio = ratio
+    intRatio = int(ratio)
     image = image.resize((image.width*intRatio, image.height*intRatio), Image.LANCZOS)
     image = image.convert('1')
     image.save("download.png", 'PNG', quality=95, dpi=[300,300], bits=1)