Creating a custom serializer for token creation

[prp-e]

Greetings.
I created this serializer:

from djoser.serializers import TokenCreateSerializer
from rest_framework.exceptions import ValidationError
from django.contrib.auth import authenticate
from djoser.conf import settings

class CustomTokenCreateSerializer(TokenCreateSerializer):
    password = serializers.CharField(required=False, style={"input_type": "password"})

    default_error_messages = {
        "invalid_credentials": "Invalid Email or Password, please try again",
        "inactive_account": "No active account found with given credentials",
    }

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.user = None
        self.fields[settings.LOGIN_FIELD] = serializers.CharField(required=False)

    def validate(self, attrs):
        password = attrs.get("password")
        params = {settings.LOGIN_FIELD: attrs.get(settings.LOGIN_FIELD)}
        self.user = authenticate(
            request=self.context.get("request"), **params, password=password
        )
        if not self.user:
            self.user = User.objects.filter(**params).first()
            if self.user and not self.user.check_password(password):
                self.fail("invalid_credentials")
        if self.user and self.user.is_active:
            return attrs
        self.fail("invalid_credentials")

and I also made this view:

class CutomObtainPairView(TokenObtainPairView):
    serializer_class = CustomTokenCreateSerializer

and when I post the data responsible for creating the JWT token to the /jwt/create endpoint, it only returns username and password and not tokens.