my aws cognito has been made like when the user signup or signin successfully they will redirect to a url from backend only(like they have created a callback lambda). so can you recommend any documentation to follow that can help me do this in react like i will only do the signin and signup with cognito it will automatically call the callback when the user signin i will not fetch redirecturl or use navigate in frontend

I tried amazon-cognito-identity-js, but it’s not working properly like the signin onsuccess doesn’t call the callback lambda i don’t know why