Update app.py

app.py

@@ -41,7 +41,7 @@ with gr.Blocks() as demo:
     sketchpad_output = gr.Image(label="Your Sketch")
     recognized_text = gr.Textbox(label="Recognized Text")
     
-    sketchpad.submit(display_sketch, inputs=sketchpad, outputs=sketchpad_output).then(
+    sketchpad.change(display_sketch, inputs=sketchpad, outputs=sketchpad_output).then(
         recognize_text, inputs=sketchpad_output, outputs=recognized_text
     )