Witam,
Pomoże mi ktoś rozwiązać problem z CORS:
Problem pojawia się dopiero od Reacta.
Access to XMLHttpRequest at 'file:///C:/Users/User/Desktop/KursWebDev/23-zadanie1v1/app.js' from origin 'null' has been blocked by CORS policy: Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https.