Update app.py

app.py

@@ -8,6 +8,9 @@ from typing import List, Optional
 import uuid
 import time
 import asyncio
+from typing import Optional
+# Modern Python (3.10+) with Annotated
+from typing import Annotated
 
 class ChatMessage(BaseModel):
     role: str
@@ -361,7 +364,7 @@ async def get_proxy():
 @app.post("/v1/chat/completions", response_model=ChatCompletionResponse)
 async def chat_completions(
     request: ChatCompletionRequest,
-    authorization: str | None = Header(None)  # Add Authorization header
+    authorization: Annotated[Optional[str], Header()] = None  # Correct format
 ):
     # Extract and validate API key
     if not authorization or not authorization.startswith("Bearer "):