fix defaults

app.py

@@ -180,7 +180,7 @@ if __name__ == "__main__":
         css=".underline-on-hover:hover { text-decoration: underline; } .flagging { font-size:12px; color:Silver; }"
     )
 
-    def submit(query, lang="en", k=10):
+    def submit(query, lang, k):
         if query == "":
             raise ValueError("Invalid query provided")
         return {
@@ -193,7 +193,6 @@ if __name__ == "__main__":
             gr.Markdown(value=description)
         with gr.Row():
             query = gr.Textbox(lines=2, placeholder="Type your query here...", label="Query")
-            query.submit(fn=submit)
         with gr.Row():
             lang = gr.Dropdown(
                 choices=[
@@ -236,6 +235,7 @@ if __name__ == "__main__":
             flag_btn = gr.Button("Flag Results")
             flag_btn.click(flag, inputs=[query, lang, k, flag_txt], outputs=[flag_txt])
 
+        query.submit(fn=submit, inputs=[query, lang, k], outputs=[results, flagging_form])
         submit_btn.click(submit, inputs=[query, lang, k], outputs=[results, flagging_form])
 
     demo.launch(enable_queue=True, debug=True)