Update main.py

main.py

@@ -23,8 +23,8 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
-line_bot_api = LineBotApi(os.environ("line_bot_api"))
-line_handler = WebhookHandler(os.environ("line_handler"))
+line_bot_api = LineBotApi(os.environ["line_bot_api"])
+line_handler = WebhookHandler(os.environ["line_handler"])
 
 working_status = 'True'