Failed to load resource: the server responded with a status of 400 Bad Request關於「Code 400, message Bad request syntax」標籤，搜尋引擎有相關的訊息討論：
Problems with flask and bad request - Stack Overflowstackoverflow.com › questions › problems-with-flask-and-...How to Fix a 400 Bad Request Error (Causes and Fixes) - Kinstakinsta.com › ... › Knowledge Base › HTTP Status Codes400 Bad Request - HTTP - MDN Web Docs - Mozilladevel