prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Cannot access Django admin panel in a Heroku deployment
  How to reproduce the behaviour
  ---------
  The FAQ describes how to [create a user via the Django admin panel](https://github.com/doccano/doccano/blob/master/docs/faq.md#how-to-create-a-user) for a locally hosted Doccano. When run locally, I have no problem to reach the admin panel on `http://localhost:8000/admin/`, in Heroku however it is not working.
  
  I have tried to reach it on
  - `https://mydeployment.herokuapp.com/admin/`
  - `https://mydeployment.herokuapp.com/admin/login`
  - `https://mydeployment.herokuapp.com/admin/login/`
  - `http://mydeployment.herokuapp.com/admin/`
  
  Those urls all result in a `500 Internal Server Error`.
  Am I missing something here, or is this perhaps a bug?
  
  Your Environment
  ---------
  <!-- Include details of your environment. -->
  
  *   Operating System: -
  *   Python Version Used: -
  *   When did you install doccano: A few days ago
  *   How did you install doccano (Heroku button etc): Heroku button
  
  
  </issue>
  <code>
  [start of backend/config/settings/heroku.py]
  1 import django_heroku
  2 
  3 from .base import *  # noqa: F401,F403
  4 
  5 django_heroku.settings(locals(), test_runner=False)
  6
  [end of backend/config/settings/heroku.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/backend/config/settings/heroku.py b/backend/config/settings/heroku.py
  --- a/backend/config/settings/heroku.py
  +++ b/backend/config/settings/heroku.py
  @@ -2,4 +2,4 @@
   
   from .base import *  # noqa: F401,F403
   
  -django_heroku.settings(locals(), test_runner=False)
  +django_heroku.settings(locals(), test_runner=False, staticfiles=False)
  
verification_info: {"golden_diff": "diff --git a/backend/config/settings/heroku.py b/backend/config/settings/heroku.py\n--- a/backend/config/settings/heroku.py\n+++ b/backend/config/settings/heroku.py\n@@ -2,4 +2,4 @@\n \n from .base import *  # noqa: F401,F403\n \n-django_heroku.settings(locals(), test_runner=False)\n+django_heroku.settings(locals(), test_runner=False, staticfiles=False)\n", "issue": "Cannot access Django admin panel in a Heroku deployment\nHow to reproduce the behaviour\r\n---------\r\nThe FAQ describes how to [create a user via the Django admin panel](https://github.com/doccano/doccano/blob/master/docs/faq.md#how-to-create-a-user) for a locally hosted Doccano. When run locally, I have no problem to reach the admin panel on `http://localhost:8000/admin/`, in Heroku however it is not working.\r\n\r\nI have tried to reach it on\r\n- `https://mydeployment.herokuapp.com/admin/`\r\n- `https://mydeployment.herokuapp.com/admin/login`\r\n- `https://mydeployment.herokuapp.com/admin/login/`\r\n- `http://mydeployment.herokuapp.com/admin/`\r\n\r\nThose urls all result in a `500 Internal Server Error`.\r\nAm I missing something here, or is this perhaps a bug?\r\n\r\nYour Environment\r\n---------\r\n<!-- Include details of your environment. -->\r\n\r\n*   Operating System: -\r\n*   Python Version Used: -\r\n*   When did you install doccano: A few days ago\r\n*   How did you install doccano (Heroku button etc): Heroku button\r\n\n", "before_files": [{"content": "import django_heroku\n\nfrom .base import *  # noqa: F401,F403\n\ndjango_heroku.settings(locals(), test_runner=False)\n", "path": "backend/config/settings/heroku.py"}]}