Update app.py

app.py

@@ -103,8 +103,8 @@ with gr.Blocks() as demo:
         </div>""")
     base64_in = gr.Textbox(label="Base64 Input")
     base64_out = gr.Textbox(label="Base64 Output")
-       
-    generate_btn.click(
+    submit_btn = gr.Button("Submit")
+    submit_btn.click(
         fn=process,
         inputs=[secret_token, base64_in],
         outputs=base64_out,