error msg

app.py

@@ -145,8 +145,8 @@ with gr.Blocks(theme=myTheme) as demo:
     trans_btn = gr.Button("Translate")
     selected = toolkit_select.select(on_select)
     print(selected)
-    fntouse = f"{selected}_trans".lower()
-    trans_btn.click(fn=fntouse, inputs=[article, lang_select], outputs=result)
+    # fntouse = f"{selected.lower()}_trans"
+    trans_btn.click(fn=opus_trans, inputs=[article, lang_select], outputs=result)
     # if selected == "OPUS":
     #     print(" chosen OPUS")