Update main.py

main.py

@@ -19,14 +19,14 @@ from authlib.integrations.starlette_client import OAuth
 from starlette.middleware.sessions import SessionMiddleware
 
 my_secret_key = os.environ['my_secret_key']
-SECRET_KEY1 = os.environ['SecretKey']
+SECRET_KEY = os.getenv('SecretKey', 'default_secret')
 from fastapi.staticfiles import StaticFiles
 from authlib.integrations.starlette_client import OAuth
 
 app = FastAPI()
 
 oauth = OAuth(app)
-app.add_middleware(SessionMiddleware, secret_key=SECRET_KEY1)
+app.add_middleware(SessionMiddleware, secret_key=SECRET_KEY)
 # Configure OAuth registry
 oauth.register(
     name='google',