ModuleNotFoundError：在 AWS Elastic Beanstalk 上部署 Flask 应用程序时没有名为“应用程序”的模块

Question

在尝试在 AWS Elastic Beanstalk 上部署 Flask 应用程序时，我一直在努力解决一个表面上简单的错误。 启动应用程序会出现502 Bad Gateway错误。 日志中的回溯显示：

Traceback (most recent call last):
File "/var/app/venv/staging-LQM1lest/lib/python3.7/site-packages/gunicorn/arbiter.py", line 589, in spawn_worker
worker.init_process()
File "/var/app/venv/staging-LQM1lest/lib/python3.7/site-packages/gunicorn/workers/gthread.py", line 92, in init_process
super().init_process()
File "/var/app/venv/staging-LQM1lest/lib/python3.7/site-packages/gunicorn/workers/base.py", line 134, in init_process
self.load_wsgi()
File "/var/app/venv/staging-LQM1lest/lib/python3.7/site-packages/gunicorn/workers/base.py", line 146, in load_wsgi
self.wsgi = self.app.wsgi()
File "/var/app/venv/staging-LQM1lest/lib/python3.7/site-packages/gunicorn/app/base.py", line 67, in wsgi
self.callable = self.load()
File "/var/app/venv/staging-LQM1lest/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 58, in load
return self.load_wsgiapp()
File "/var/app/venv/staging-LQM1lest/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 48, in load_wsgiapp
return util.import_app(self.app_uri)
File "/var/app/venv/staging-LQM1lest/lib/python3.7/site-packages/gunicorn/util.py", line 359, in import_app
mod = importlib.import_module(module)
File "/usr/lib64/python3.7/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 965, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'application'

我在application.py中的 flask 应用程序非常简单：

from flask import Flask
from flask import render_template

application = app = Flask(__name__)

if __name__ == "__main__":
    application.run()

@application.route("/")
def index():
    return render_template('index.html', name=None)

我的目录结构也是如此。 我上传ball.zip ，其中包含：

ball/
    application.py
    requirements.txt
    static/
    templates/

该应用程序使用 Python 3.7 在 64 位 Amazon Linux 2/3.3.9 上运行。 我还检查了配置变量WSGIPath是否设置为application 。 有人对解决此问题有任何指示吗？ 谢谢！

Answer 1

zip 中不应有文件夹“ball”。 每个文件都应该在 zip 的根目录中，而不是在文件夹“ball”中。