Update app.py

app.py

@@ -13,9 +13,11 @@ from threading import Lock
 @dataclass
 class AppState:
     conversation: list = field(default_factory=list)
-    lock: Lock = field(default_factory=Lock)
     client: openai.OpenAI = None
 
+# Global lock for thread safety
+state_lock = Lock()
+
 def create_client(api_key):
     return openai.OpenAI(
         base_url="https://llama3-1-8b.lepton.run/api/v1/",
@@ -68,7 +70,7 @@ def generate_response_and_audio(message, state):
     if state.client is None:
         raise gr.Error("Please enter a valid API key first.")
 
-    with state.lock:
+    with state_lock:
         state.conversation.append({"role": "user", "content": message})
         
         try: