Update app.py

app.py

@@ -43,7 +43,9 @@ with gr.Blocks() as demo:
     study_tutor = gr.State(EchoingTutor())
 
     # Instead of ask students to provide key, the key is now directly provided by the instructor
+    api_input = os.environ.get("OPENAI_API_KEY")
     embed_key(os.environ.get("OPENAI_API_KEY"), study_tutor)
+    
     # Reference document functionality (building vector stores)
     with gr.Box():
         gr.Markdown("### Add Reference Documents")