Didn't get refresh token

hi
I am watching django course and I’m in a part that we implement register and login process. I just follow the video but I don’t know why while I login with an existing user in jwt/create endpoint, I just get access token and there is no refresh token. my djoser and simple_jwt parameters in settings.py is just like the video and even chatGPT couldn’t help me to fix it.
I would be grateful if anyone help me