Question

据我所知，我的日志没有显示任何错误，但是在加载网站时出现以下错误：

An error occurred in the application and your page could not be served. If you are the application owner, check your logs for details. You can do this from the Heroku CLI with the command heroku logs --tail

您可以在下面找到日志。我在这里想念东西吗？

-----> Python app detected
-----> Uninstalling stale dependencies
       Uninstalling Django-2.1.5:
         Successfully uninstalled Django-2.1.5
       Uninstalling Pillow-5.4.1:
         Successfully uninstalled Pillow-5.4.1
-----> Installing requirements with pip
       Collecting dj-database-url==0.5.0 (from -r /tmp/build_99fe21a8dcc00005ce600053adc20260/requirements.txt (line 1))
         Downloading https://files.pythonhosted.org/packages/d4/a6/4b8578c1848690d0c307c7c0596af2077536c9ef2a04d42b00fabaa7e49d/dj_database_url-0.5.0-py2.py3-none-any.whl
       Collecting Django==2.1.5 (from -r /tmp/build_99fe21a8dcc00005ce600053adc20260/requirements.txt (line 2))
         Downloading https://files.pythonhosted.org/packages/36/50/078a42b4e9bedb94efd3e0278c0eb71650ed9672cdc91bd5542953bec17f/Django-2.1.5-py3-none-any.whl (7.3MB)
       Collecting django-heroku==0.3.1 (from -r /tmp/build_99fe21a8dcc00005ce600053adc20260/requirements.txt (line 3))
         Downloading https://files.pythonhosted.org/packages/59/af/5475a876c5addd5a3494db47d9f7be93cc14d3a7603542b194572791b6c6/django_heroku-0.3.1-py2.py3-none-any.whl
       Collecting gunicorn==19.9.0 (from -r /tmp/build_99fe21a8dcc00005ce600053adc20260/requirements.txt (line 4))
         Downloading https://files.pythonhosted.org/packages/8c/da/b8dd8deb741bff556db53902d4706774c8e1e67265f69528c14c003644e6/gunicorn-19.9.0-py2.py3-none-any.whl (112kB)
       Collecting Pillow==5.4.1 (from -r /tmp/build_99fe21a8dcc00005ce600053adc20260/requirements.txt (line 5))
         Downloading https://files.pythonhosted.org/packages/ae/2a/0a0ab2833e5270664fb5fae590717f867ac6319b124160c09f1d3291de28/Pillow-5.4.1-cp37-cp37m-manylinux1_x86_64.whl (2.0MB)
       Collecting psycopg2==2.8.2 (from -r /tmp/build_99fe21a8dcc00005ce600053adc20260/requirements.txt (line 6))
         Downloading https://files.pythonhosted.org/packages/23/7e/93c325482c328619870b6cd09370f6dbe1148283daca65115cd63642e60f/psycopg2-2.8.2.tar.gz (368kB)
       Collecting whitenoise==4.1.2 (from -r /tmp/build_99fe21a8dcc00005ce600053adc20260/requirements.txt (line 8))
         Downloading https://files.pythonhosted.org/packages/fd/2a/b51377ab9826f0551da19951257d2434f46329cd6cfdf9592ea9ca5f6034/whitenoise-4.1.2-py2.py3-none-any.whl
       Installing collected packages: dj-database-url, Django, whitenoise, psycopg2, django-heroku, gunicorn, Pillow
         Running setup.py install for psycopg2: started
           Running setup.py install for psycopg2: finished with status 'done'
       Successfully installed Django-2.1.5 Pillow-5.4.1 dj-database-url-0.5.0 django-heroku-0.3.1 gunicorn-19.9.0 psycopg2-2.8.2 whitenoise-4.1.2
-----> $ python manage.py collectstatic --noinput
       119 static files copied to '/tmp/build_99fe21a8dcc00005ce600053adc20260/staticfiles', 375 post-processed.
-----> Discovering process types
 ~     Mis-cased procfile detected; ignoring.
 ~     Rename it to Procfile to have it honored.
       Procfile declares types -> (none)
-----> Compressing...
       Done: 68.2M
-----> Launching...
       Released v7
       https://andrew-data-incubator-project.herokuapp.com/ deployed to Heroku

Answer 1

 ~     Mis-cased procfile detected; ignoring.
 ~     Rename it to Procfile to have it honored.

尝试按照日志中的提示将procfile重命名为Procfile。

Answer 2

请确保您已在应用程序中添加const port = Process.env.PORT || 3000 ;并删除本地主机（如果在侦听端口时已提及）。

server.listen(port,()=>{  // do not add localhost here if you are deploying it
    console.log("server listening to port "+port);
});

Answer 3

再次尝试手动部署，该错误将解决。实际上，这是一个临时解决方案，因为该错误将在一段时间后再次出现。

Heroku应用程序成功部署，但在加载网站时收到应用程序错误

3 个答案: