fix image pil issue

app.py

@@ -59,7 +59,7 @@ model.compile(metrics=metrics)
 def predict(ash_image, model=model):
     #label = np.load(label_image)
     #ash_image = np.load(ash_image)[...,4]
-    ash_image = np.asarray(Image.open(ash_image))
+    ash_image = np.asarray(ash_image)
     y_pred = model.predict(ash_image.reshape(1,256, 256, 3))
     prediction = np.argmax(y_pred[0], axis=2).reshape(256,256,1)
     #intersection = label & prediction