fixed clear button

app.py

@@ -137,6 +137,11 @@ def create_new_websocket_connection():
     threading.Thread(target=connections[client_id].run, daemon=True).start()
     return client_id
 
+def clear_transcript(client_id):
+    if client_id in connections:
+        connections[client_id].transcript = ""
+    return ""
+
 if __name__ == "__main__":
     with gr.Blocks(css=css, theme=gr.themes.Soft()) as demo:
         gr.Markdown(f"# Realtime transcription demo")
@@ -150,8 +155,7 @@ if __name__ == "__main__":
                 clear_button = gr.Button("Clear")
 
         client_id = gr.State()
-        state = gr.State()
-        clear_button.click(lambda: None, outputs=[state]).then(lambda: "", outputs=[output_textbox])
+        clear_button.click(clear_transcript, inputs=[client_id], outputs=[output_textbox])
         audio_input.stream(send_audio_chunk, [audio_input, client_id], [output_textbox], stream_every=0.5, concurrency_limit=None)
         demo.load(create_new_websocket_connection, outputs=[client_id])