changed import of img_to_array() function

app.py

@@ -10,7 +10,7 @@ examples = ['examples/179.png', 'examples/493.png', 'examples/780.png']
 
 
 def infer(original_image):
-    image = keras.preprocessing.image.img_to_array(original_image)
+    image = keras.utils.img_to_array(original_image)
     image = image.astype("float32") / 255.0
     image = np.expand_dims(image, axis=0)
     output = model.predict(image)