POST http://127.0.0.1:8000/api/auth/register/ gets 400 Bad Request error in Postman

[HTownGirl17]

I am working on part 3 video about adding authentication & when doing POST http://127.0.0.1:8000/api/auth/register/ in Postman I get a 400 Bad Request. I have tried it in my code & by downloading the code provided here & get the same response. What am I doing wrong?