Update app.py

app.py

@@ -162,7 +162,7 @@ with gr.Blocks(theme=gr.themes.Soft()) as app:
             diac_out = gr.Textbox(label="Diacritized Text (Reference)", lines=3, interactive=True, text_align="right")
             diac_out.change(
                 fn=lambda text: text,  # Just pass the value through
-                inputs=diacritized_output,
+                inputs=diac_out,
                 outputs=reference_text_state
             )
             diac_btn.click(fn=diacritize_text, inputs=[model_sel, text_in], outputs=[diac_out, ref_state])