Update app.py

app.py

@@ -62,7 +62,7 @@ with gr.Blocks() as demo:
             for img, label in labeled_data:
               # Hack due to https://github.com/huggingface/datasets/issues/4796 
               labeled_dataset = labeled_dataset.add_item({
-                  "image": feature.encode_example(Image.fromarray(img, mode='L')), 
+                  "image": feature.encode_example(Image.fromarray(img)), 
                   "label": label
               })
             labeled_dataset.push_to_hub("active-learning/labeled_samples")