ModuleNotFoundError: No module named "tip_administration_app"

I'm trying to set up a complete environment to run a Django application on ubuntu 22.04 with gunicorn and nginx. I use a droplet provided by Digital Ocean and i'm trying to follow this tutorial : https://www.digitalocean.com/community/tutorials/how-to-set-up-django-with-postgres-nginx-and-gunicorn-on-ubuntu-20-04

Everything is going well until I have to link gunicorn to my wsgi.py file.

When i'm trying this command :

gunicorn --bind 0.0.0.0:8000 tip_administration_app.wsgi

I have this error :

[2022-12-20 14:08:25 +0000] [20676] [INFO] Starting gunicorn 20.1.0
[2022-12-20 14:08:25 +0000] [20676] [INFO] Listening at: http://0.0.0.0:8000 (20676)
[2022-12-20 14:08:25 +0000] [20676] [INFO] Using worker: sync
[2022-12-20 14:08:25 +0000] [20677] [INFO] Booting worker with pid: 20677
[2022-12-20 14:08:25 +0000] [20677] [ERROR] Exception in worker process
Traceback (most recent call last):
  File "/home/django/the-ideal-partner/myprojectenv/lib/python3.10/site-packages/gunicorn/arbiter.py", line 589, in spawn_worker
    worker.init_process()
  File "/home/django/the-ideal-partner/myprojectenv/lib/python3.10/site-packages/gunicorn/workers/base.py", line 134, in init_process
    self.load_wsgi()
  File "/home/django/the-ideal-partner/myprojectenv/lib/python3.10/site-packages/gunicorn/workers/base.py", line 146, in load_wsgi
    self.wsgi = self.app.wsgi()
  File "/home/django/the-ideal-partner/myprojectenv/lib/python3.10/site-packages/gunicorn/app/base.py", line 67, in wsgi
    self.callable = self.load()
  File "/home/django/the-ideal-partner/myprojectenv/lib/python3.10/site-packages/gunicorn/app/wsgiapp.py", line 58, in load
    return self.load_wsgiapp()
  File "/home/django/the-ideal-partner/myprojectenv/lib/python3.10/site-packages/gunicorn/app/wsgiapp.py", line 48, in load_wsgiapp
    return util.import_app(self.app_uri)
  File "/home/django/the-ideal-partner/myprojectenv/lib/python3.10/site-packages/gunicorn/util.py", line 359, in import_app
    mod = importlib.import_module(module)
  File "/usr/lib/python3.10/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
  File "<frozen importlib._bootstrap>", line 992, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1004, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'tip_administration_app'
[2022-12-20 14:08:25 +0000] [20677] [INFO] Worker exiting (pid: 20677)
[2022-12-20 14:08:25 +0000] [20676] [INFO] Shutting down: Master
[2022-12-20 14:08:25 +0000] [20676] [INFO] Reason: Worker failed to boot.

Here is my project structure :

tip-project 
    -- myprojectenv
    -- Procfile
    -- requirements.txt

    -- TIP_PROJECT
         -- manage.py

         -- authentication_app 
                -- __init__.py
                -- forms.py
                -- models.py 
                -- views.py 
                -- templates 
                -- static 

         -- partnerinfos_app
                -- __init__.py
                -- forms.py
                -- models.py 
                -- views.py 
                -- templates 
                -- static 

         -- tip_administration_app 
                -- __init__.py
                -- asgi.py
                -- settings.py
                -- urls.py
                -- wsgi.py

My settings.py contains :

import os
from pathlib import Path
import sys

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent


# Quick-start development settings - unsuitable for production

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'secretkeystackoverflow'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = ['142.93.139.198','localhost', 'test.theidealpartner.fr']

AUTH_USER_MODEL = 'authentication_app.User'


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'authentication_app',
    'partnerinfos_events_app',
    'tip_administration_app',
    'pytest',
   'coverage',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'tip_administration_app.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [
            BASE_DIR.joinpath('templates'),
            ],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]


WSGI_APPLICATION = 'tip_administration_app.wsgi.application'


# Database


DATABASES = {
    
        'default':{
            'ENGINE':'django.db.backends.mysql',
            'NAME':'theidealpartnerdb',
            'USER':'django_user',
            'PASSWORD':'PAssworddbstackoverflow',
            'HOST':'127.0.0.1',
            'PORT':'3306',
            'OPTIONS':{
}
}

}


# Password validation


AUTH_PASSWORD_VALIDATORS = [
    # See validators in tip_administration_app.validators
]


# Internationalization


LANGUAGE_CODE = 'fr-fr'
TIME_ZONE = 'UTC'
USE_I18N = True

USE_L10N = True
USE_TZ = True

# Static files (CSS, JavaScript, Images)
STATIC_URL = 'static/'
STATICFILES_DIRS = [
    BASE_DIR / "authentication_app/static/authentication_app",
    BASE_DIR / "partnerinfos_events_app/static/partnerinfos_events_app",
]

# Default primary key field type
# https://docs.djangoproject.com/en/4.0/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

AUTH_USER_MODEL='authentication_app.User'

LOGIN_URL =  '/'

# EMAIL settings. To change in production
EMAIL_BACKEND = "django.core.mail.backends.filebased.EmailBackend"
EMAIL_FILE_PATH = BASE_DIR /"authentication_app/sent_emails"

FILE_UPLOAD_TEMP_DIR = "/tmp"

# Date format settings. See "Datefield()" in models.py
DATE_INPUT_FORMATS = ('%Y-%m-%d')

# needed for pytest Stack-Overflow : https://stackoverflow.com/questions/48163641/django-core-exceptions-a>
os.environ["DJANGO_ALLOW_ASYNC_UNSAFE"] = "true"

Here is wsgi.py :

"""
WSGI config for TIP project.

It exposes the WSGI callable as a module-level variable named ``application``.

For more information on this file, see
https://docs.djangoproject.com/en/4.0/howto/deployment/wsgi/
"""

import os

from django.core.wsgi import get_wsgi_application

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'tip_administration_app.settings')

application = get_wsgi_application()

I already tried all subjects on this topic on stack overflow but none of them helped me...

Any advices would be appreciated.

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