django error in import users.signals into apps.py in users app

Question

following is my settings.py installed app section

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'django.contrib.sites',

    # third party
    'rest_framework',
    'rest_framework.authtoken',
    'rest_auth',
    'allauth',
    'allauth.account',
    'allauth.socialaccount',
    'rest_auth.registration',
    'corsheaders',
    'crispy_forms',
    # local apps
    'users.apps.UsersConfig',
]
AUTH_USER_MODEL = 'users.CustomUser'

following is my apps.py file content

from django.apps import AppConfig


class UsersConfig(AppConfig):
    name = 'users'

    def ready(self):
        import users.signals

following is my signal.py file content

from django.db.models.signals import post_save
from django.contrib.auth.models import User
from django.dispatch import receiver
from .models import Profile


@receiver(post_save, sender=User)
def create_profile(sender, instance, created, **kwargs):
    if created:
        Profile.objects.create(user=instance)


@receiver(post_save, sender=User)
def save_profile(sender, instance, **kwargs):
    instance.profile.save()

init.py file in users app is empty

when I run command python manage.py makemigrations it gives error ModuleNotFoundError: No module named 'users.users' and also it shows error "No module named users" in the following line in apps.py import users.signals

my project directory sctructure screenshot is as shown in attached picture [enter image description here][1]

  [1]: https://i.sstatic.net/PNU7p.png

with reference to above django configuration/code what correction in needed to resolve error in apps.py so that no module named users is resolved and signals are loaded correctly for the users app

edit: as needed by another user for providing solution my current custom user model in development is as below

from django.contrib.auth.models import AbstractUser
from django.db import models
from django.utils.translation import ugettext_lazy as _

from .managers import CustomUserManager


class CustomUser(AbstractUser):

    CHOICES = (
        ('T', 'Teacher'),
        ('I', 'Institute'),
        ('S', 'Student'),
    )

    role = models.CharField(max_length=1, choices=CHOICES)
    email = models.EmailField(_('email address'), unique=True)
    date_of_birth = models.DateField(blank=True, null=True)
    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = []

    objects = CustomUserManager()

    def __str__(self):
        return self.email


class Student(models.Model):
    user_student = models.OneToOneField(
        CustomUser, on_delete=models.CASCADE, related_name="student_account"
    )
    standard = models.IntegerField(blank=True, null=True)


class Profile(models.Model):
    user_profile = models.OneToOneField(
        CustomUser, on_delete=models.CASCADE, related_name="profile"
    )
    location = models.CharField(max_length=140, blank=True, null=True)
    gender = models.CharField(max_length=140, default="Male", blank=True, null=True)

    def __unicode__(self):
        return u'Profile of user: %s' % self.user_profile.email


class Teacher(models.Model):
    user_teacher = models.OneToOneField(
        CustomUser, on_delete=models.CASCADE, related_name="teacher_account"
    )
    years_of_Experience = models.IntegerField(blank=True, null=True)


class Institute(models.Model):
    user_institute = models.OneToOneField(
        CustomUser, on_delete=models.CASCADE, related_name="Institute_account"
    )
    zip = models.CharField(max_length=30, null=True, blank=True)


class StudentProfile(models.Model):
    user_student_profile = models.OneToOneField(
        Student, on_delete=models.CASCADE, related_name="student_profile"
    )
    is_disabled = models.BooleanField(default=False, blank=True, null=True)

    def __unicode__(self):
        return u'Profile of Student: %s' % self.user_student_profile.user_student.email


class TeacherProfile(models.Model):
    user_teacher_profile = models.OneToOneField(
        Teacher, on_delete=models.CASCADE, related_name="teacher_profile"
    )
    subject = models.CharField(max_length=140, blank=True, null=True)

    def __unicode__(self):
        return u'Profile of teacher : %s' % self.user_teacher_profile.user_teacher.email


class InstituteProfile(models.Model):
    user_institute_profile = models.OneToOneField(
        Institute, on_delete=models.CASCADE, related_name="institute_profile"
    )
    subject = models.CharField(max_length=140, blank=True, null=True)

    def __unicode__(self):
        return u'Profile of Institute : %s' % self.user_institute_profile.user_institute.email

Answer 1

Everything looks fine. I think the reason for error is because of Order of apps in INSTALLED_APPS.

Change your INSTALLED_APPS like this and check.

INSTALLED_APPS = [
     # local apps
    'users.apps.UsersConfig',
    
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'django.contrib.sites',
     
    # third party
    'rest_framework',
    'rest_framework.authtoken',
    'rest_auth',
    'allauth',
    'allauth.account',
    'allauth.socialaccount',
    'rest_auth.registration',
    'corsheaders',
    'crispy_forms',
]