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Heroku app successfully deploying, but receiving application error when loading site

My logs don't indicate any errors as far as I can tell, but I'm receiving the following error when loading the site:

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

Below you can find the logs. Am I missing something here?

-----> 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
like image 735
Andrew Avatar asked Apr 22 '19 20:04

Andrew


People also ask

Why am I getting an application error on Heroku?

"Application Error" or similar is always caused by your own application code. Routing errors will normally only surface themselves within the logs of your application. In most cases, you will be able to see the cause of the error there. To learn more about logging, please see our Logging article on DevCenter.

What Causes application Error?

However, most application errors occur because developers either unknowingly introduce logic errors into their code or do not discover potential problems during an application's test phase. Viruses and faulty hardware are also causes of application errors.

Why do Heroku apps take so long to load?

To preserve your dyno hours from burning out or wasting, Heroku puts your app to sleep after 30 minutes of inactivity. How generous! This is what makes your app is slow to load.

How do I know if Heroku app is working?

You can run heroku open , which will open your app in your default web browser. Of course you can also manually navigate to your app's URL, which should be be https://<your-app-name>.herokuapp.com . You can also run heroku ps which will show your app's dynos and their status.


1 Answers

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

Try renaming procfile to Procfile as the message in the logs suggests.

like image 131
Alasdair Avatar answered Oct 28 '22 21:10

Alasdair