Possible blank screen issue fix

app.py

@@ -620,9 +620,8 @@ css = """
         max-width: 1560px;
     }
     """
-theme = gr.themes.Ocean()
-    
-with gr.Blocks(css=css, theme=theme) as demo:
+
+with gr.Blocks(css=css) as demo:
 
     session_state = gr.State()
     demo.load(start_session, outputs=[session_state])