Update app.py

app.py

@@ -148,7 +148,8 @@ def infer(use_custom_model, model_name, weight_name, custom_lora_weight, image_i
         image = np.concatenate([image, image, image], axis=2)
         image = Image.fromarray(image)
     elif preprocessor == "lineart": 
-        image = PIL.Image.fromarray(image_in)
+        image = load_image(image_in)
+        image = Image.fromarray(image)
     
     if use_custom_model: