I keep getting the same error after making the post request.

[cypherhp]

Great! Let’s test the new endpoint with Insomnia. In the collection of requests for this project, create a
new POST request. The URL will be as follows: localhost:8000/api/auth/register/.
As a body for the request, you can pass the following:
{
"username": "mouse21",
"first_name": "Mickey",
"last_name": "Mouse",
"password": "12345678",
"email": "[email protected]"
}
Also, you didnt mentioned anything about the type of header in Insomnia.