Django+Celery运行报错：No module named '<project_name>' 求助

调试这个问题已经第二天了，只能来社区求助。几个月前用cookiecutter-django生成了项目，结构如下：

Project name
     config/settings/...
     src/
        app_name/
            __init__.py
     manage.py

最初在config目录下创建celery.py时因重名报错，尝试absolute_import后参考cookiecutter-django的命名改成了celery_app.py，代码如下：

celery_app.py #

import os

from celery import Celery

# set the default Django settings module for the 'celery' program.
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "config.settings.base")

app = Celery("my_awesome_project") #I tried this with 10 different names, doesn't make any difference

# Using a string here means the worker doesn't have to serialize
# the configuration object to child processes.
# - namespace='CELERY' means all celery-related configuration keys
#   should have a `CELERY_` prefix.
app.config_from_object("django.conf:settings", namespace="CELERY")

# Load task modules from all registered Django app configs.
app.autodiscover_tasks()

config目录下的__init__.py #

#from __future__ import absolute_import, unicode_literals

# This will make sure the app is always imported when
# Django starts so that shared_task will use this app.
from .celery_app import app as celery_app

__all__ = ('celery_app',)

运行Celery命令时出现如下报错：

File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 984, in _find_and_load_unlocked
ModuleNotFoundError: No module named '<project_name>'

已知Python3.7与Celery存在兼容问题需降级importlib-metadata至4.13.0，我使用Python3.9.6，已尝试降级及安装最新版本的importlib-metadata，也在项目根目录尝试了多种Celery命令，如celery -A config.celery_app worker -l info、celery -A config.celery_app:app worker -l DEBUG等，且redis服务正常运行，仍无法解决问题，恳请有类似经验的开发者提供帮助。

内容的提问来源于stack exchange，提问作者Vinko Oakniiv