"detail": "No active account found with the given credentials" simplejwt

I am using Django rest API and trying to authenticate a user with username and password (obtain token pairs) with simpleJWT. In my settings.py I have added

      REST_FRAMEWORK = {

     'DEFAULT_PERMISSION_CLASSES': (
        'rest_framework.permissions.AllowAny',
    ),

    'DEFAULT_AUTHENTICATION_CLASSES': (

        'rest_framework_simplejwt.authentication.JWTAuthentication',
    )
    }

my urls.py is as below

     urlpatterns = [
          path('admin/', admin.site.urls),
          path('api/token/', TokenObtainPairView.as_view(), name ='token_obtain_pair'),
          path('api/token/refresh/', jwt_views.TokenRefreshView.as_view(), name ='token_refresh'),

        ]

However when I send a request to authenticate (register) a user and obtain token for that user it seems like it tries to verify the user instead and gives me the following error

     {
        "detail": "No active account found with the given credentials"
     }

I have read multiple other related questions but nothing helped. What should I do to obtain a token for an email address and password?