Видео ютуба по тегу Json Post Request Isn't Working (React.js)

Why Your React POST Request Isn't Sending Data to the Server
Why Your React POST Request Isn't Sending Data to the Server
Understanding the fetch API: Why response.json() Fails on POST Requests
Understanding the fetch API: Why response.json() Fails on POST Requests
Troubleshooting Your JSON POST Request in React.js
Troubleshooting Your JSON POST Request in React.js
Solving the React UI Update Issue After Data Insertion with json-server
Solving the React UI Update Issue After Data Insertion with json-server