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

python django heroku

34,594

Solution 1

 ~     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.

Solution 2

Try Manual Deployment again and the error will resolve. Actually it's a temporary solution as this error will again arise after sometime.

34,594

Author by

Andrew

Making life more pleasant and efficient, one line of code at a time.

Updated on July 09, 2022

Comments

Andrew almost 2 years

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

Andrew about 5 years

Good catch! That got rid of that message in the log, but I'm still getting that error. I've updated my post with the new error log.
Alasdair about 5 years

Please don’t rewrite your question with a completely new error - it means that existing answers don’t make sense any more. I’ve rolled back the question to an earlier version.
Alasdair about 5 years

The second error is because you used an invalid module name data-incubator-project.wsgi, perhaps in Procfile. Python module names can’t contain hyphens. Perhaps you want data_incubation_project.wsgi, but I can’t tell for sure because you didn’t show your project layout.
DiegoGoLeoro over 2 years

how to fix this issue permanently?