I am trying to register users using django rest framework but this is the error i am getting, Please help Identify the issue

TypeError at /api/register/
‘module’ object is not callable
Request Method: POST
Request URL: http://127.0.0.1:8000/api/register/
Django Version: 3.1.5
Exception Type: TypeError
Exception Value:
‘module’ object is not callable
Exception Location: C:UsersbenPycharmProjectsbuddyroolibsite-packagesrest_frameworkgenerics.py, line 110, in get_serializer
Python Executable: C:UsersbenPycharmProjectsbuddyrooScriptspython.exe
Python Version: 3.8.5

below is RegisterSerializer

from django.contrib.auth.password_validation import validate_password
from rest_framework import serializers
from django.contrib.auth.models import User
from rest_framework.validators import UniqueValidator


class RegisterSerializer(serializers.ModelSerializer):
    email = serializers.EmailField(
        required=True,
        validators=[UniqueValidator(queryset=User.objects.all())]
    )

    password = serializers.CharField(write_only=True, required=True, validators=[validate_password])
    password2 = serializers.CharField(write_only=True, required=True)

    class Meta:
        model = User
        fields = ('username', 'password', 'password2', 'email', 'first_name', 'last_name')
        extra_kwargs = {
            'first_name': {'required': True},
            'last_name': {'required': True}
        }

    def validate(self, attrs):
        if attrs['password'] != attrs['password2']:
            raise serializers.ValidationError({"password": "Password fields didn't match."})

        return attrs

    def create(self, validated_data):
        user = User.objects.create(
            username=validated_data['username'],
            email=validated_data['email'],
            first_name=validated_data['first_name'],
            last_name=validated_data['last_name']
        )

        user.set_password(validated_data['password'])
        user.save()

        return user

and RegisterView.py

from django.contrib.auth.models import User
from rest_framework import generics
from rest_framework.permissions import IsAuthenticated, AllowAny  # <-- Here
from rest_framework.response import Response
from rest_framework.views import APIView

from api import UsersSerializer, RegisterSerializer


class RegisterView(generics.CreateAPIView):
    queryset = User.objects.all()
    serializer_class = RegisterSerializer
    permission_classes = (AllowAny,)

Source: Python Questions