minor fix

app.py

@@ -310,10 +310,10 @@ with gr.Blocks() as gpt_analysis:
         a report on overall sentiment flow of the conversation on the \
         volunteer's perspective.<br /> Click on them and submit them to the model to see how it works.")
     conversation = gr.Textbox(label="Input", lines=2)
-    btn = gr.Button(value="Submit")
     api_key = gr.Textbox(label="Key", lines=1)
     btn_key = gr.Button(value="Submit Key")
     btn_key.click(set_key, inputs=api_key)
+    btn = gr.Button(value="Submit")
     with gr.Row():
         output_box = gr.Textbox(value="", label="Output",lines=4)
         plot_box = gr.Plot(label="Analysis Plot")