Update app.py

app.py

@@ -27,11 +27,17 @@ app.include_router(router)
 # Initialize Firebase Admin SDK
 try:
     cred = credentials.Certificate("serviceAccountKey.json")
-    firebase_admin.initialize_app(cred)
+    try:
+        # if an app is already initialized, this will succeed
+        firebase_admin.get_app()
+    except ValueError:
+        # otherwise initialize it exactly once
+        firebase_admin.initialize_app(cred)
     db = firestore.client()
 except Exception as e:
     logger.error(f"Failed to initialize Firebase Admin SDK: {str(e)}")
     raise
+
 class UpdateStatusRequest(BaseModel):
     userId: str
     medicineName: str