a year ago
Starting Container
[2025-07-24 08:32:44 +0000] [1] [INFO] Starting gunicorn 20.1.0
[2025-07-24 08:32:44 +0000] [1] [INFO] Listening at: http://0.0.0.0:8080 (1)
[2025-07-24 08:32:44 +0000] [1] [INFO] Using worker: sync
[2025-07-24 08:32:44 +0000] [2] [INFO] Booting worker with pid: 2
[2025-07-24 08:32:44 +0000] [2] [ERROR] Exception in worker process
Traceback (most recent call last):
File "/usr/local/lib/python3.10/site-packages/gunicorn/arbiter.py", line 589, in spawn_worker
worker.init_process()
File "/usr/local/lib/python3.10/site-packages/gunicorn/workers/base.py", line 134, in init_process
self.load_wsgi()
File "/usr/local/lib/python3.10/site-packages/gunicorn/workers/base.py", line 146, in load_wsgi
self.wsgi = self.app.wsgi()
File "/usr/local/lib/python3.10/site-packages/gunicorn/app/base.py", line 67, in wsgi
self.callable = self.load()
File "/usr/local/lib/python3.10/site-packages/gunicorn/app/wsgiapp.py", line 58, in load
return self.load_wsgiapp()
File "/usr/local/lib/python3.10/site-packages/gunicorn/app/wsgiapp.py", line 48, in load_wsgiapp
return util.import_app(self.app_uri)
File "/usr/local/lib/python3.10/site-packages/gunicorn/util.py", line 359, in import_app
mod = importlib.import_module(module)
File "/usr/local/lib/python3.10/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
File "<frozen importlib._bootstrap>", line 1004, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'main'
[2025-07-24 08:32:44 +0000] [2] [INFO] Worker exiting (pid: 2)
[2025-07-24 08:32:44 +0000] [1] [INFO] Shutting down: Master
[2025-07-24 08:32:44 +0000] [1] [INFO] Reason: Worker failed to boot.
[2025-07-24 08:32:45 +0000] [1] [INFO] Starting gunicorn 20.1.0
[2025-07-24 08:32:45 +0000] [1] [INFO] Listening at: http://0.0.0.0:8080 (1)
[2025-07-24 08:32:45 +0000] [1] [INFO] Using worker: sync
[2025-07-24 08:32:45 +0000] [2] [INFO] Booting worker with pid: 2
[2025-07-24 08:32:45 +0000] [2] [ERROR] Exception in worker process
Traceback (most recent call last):
mod = importlib.import_module(module)
File "/usr/local/lib/python3.10/site-packages/gunicorn/arbiter.py", line 589, in spawn_worker
File "/usr/local/lib/python3.10/importlib/__init__.py", line 126, in import_module
worker.init_process()
return _bootstrap._gcd_import(name[level:], package, level)
File "/usr/local/lib/python3.10/site-packages/gunicorn/workers/base.py", line 134, in init_process
File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
self.load_wsgi()
File "<frozen importlib._bootstrap>", line 1004, in _find_and_load_unlocked
File "/usr/local/lib/python3.10/site-packages/gunicorn/workers/base.py", line 146, in load_wsgi
ModuleNotFoundError: No module named 'main'
self.wsgi = self.app.wsgi()
[2025-07-24 08:32:45 +0000] [2] [INFO] Worker exiting (pid: 2)
File "/usr/local/lib/python3.10/site-packages/gunicorn/app/base.py", line 67, in wsgi
self.callable = self.load()
File "/usr/local/lib/python3.10/site-packages/gunicorn/app/wsgiapp.py", line 58, in load
return self.load_wsgiapp()
I changed my Procfile correctly and added all requiremnts but still able to get all these deploy logs after correctly changing
Pinned Solution
a year ago
Praveen, as the issue was resolved for you, do mark my post as the solution for this query, so that others visiting this thread would be benefitted!!
17 Replies
a year ago
Hey there! We've found the following might help you get unblocked faster:
- 🧵 coding
- 🧵 ModuleNotFoundError: No module named 'store.wsg'
- 🧵 ModuleNotFoundError: No module named 'pkgutil'
- 🧵 ModuleNotFoundError: No module named 'psycopg2'
If you find the answer from one of these, please let us know by solving the thread!
a year ago
Is the python server running fine, locally? If yes, can you please provide the screenshot for the intial lines of the server file?
clashing
Is the python server running fine, locally? If yes, can you please provide the screenshot for the intial lines of the server file?
a year ago
2025-07-22 11:59:18,511 INFO [31m[1mWARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.[0m
* Running on http://127.0.0.1:5000
2025-07-22 11:59:18,512 INFO [33mPress CTRL+C to quit[0mtak-praveen
``` 2025-07-22 11:59:18,511 INFO [31m[1mWARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.[0m * Running on http://127.0.0.1:5000 2025-07-22 11:59:18,512 INFO [33mPress CTRL+C to quit[0m ```
a year ago
So it's running on your machine. Btw, I asked you to share the screen shot of the server file! Also, do share the ss for docker image, if you are using that
clashing
So it's running on your machine. Btw, I asked you to share the screen shot of the server file! Also, do share the ss for docker image, if you are using that
a year ago
This is ss of my docker image...
Attachments
tak-praveen
This is ss of my docker image...
a year ago
If you are using a pre-defined port in your server file, then you have to do `EXPOSE PORT_NUMBER` in the Docker file. For instance, I am running a Flask server in which I am using a port: 7575 (pre-defined port or magic port acc to Railway)
if __name__ == '__main__':
app.run(host='0.0.0.0', port=7575)If you could do that, and provide what your server file looks like, then I guess we can resolve this
(Do share the ss of the initial lines of the server file, as requested above)
Attachments
a year ago
Starting Container
* Serving Flask app 'main'
* Debug mode: off
Now i'm getting this in deploy logs...
tak-praveen
Starting Container \* Serving Flask app 'main' \* Debug mode: off Now i'm getting this in deploy logs...
a year ago
Now it's working, right? As there are no error build logs!
tak-praveen
Right... Can you guide me how i can view my website through link?
a year ago
That's great ༼ つ ◕_◕ ༽つ
Yes, follow these steps to see the website (Flask server):
- Go to the "settings" tab for the service
- Click on Generate Domain and make sure to use 5000, which is your port number.
- Then a link would be generated, you can open that, and it would be your up & running Flask server.
clashing
If you are using a pre-defined port in your server file, then you have to do \`EXPOSE PORT\_NUMBER\` in the Docker file. For instance, I am running a Flask server in which I am using a port: 7575 (pre-defined port or magic port acc to Railway)  ```python if __name__ == '__main__': app.run(host='0.0.0.0', port=7575) ``` If you could do that, and provide what your server file looks like, then I guess we can resolve this (Do share the ss of the initial lines of the server file, as requested above)
a year ago
Do mark the referenced post as your solution which helped you in updating the docker file, and exposing the port (the button would be at the bottom of that post) ^_^
clashing
That's great ༼ つ ◕\_◕ ༽つ Yes, follow these steps to see the website (Flask server): 1. Go to the "settings" tab for the service 2. Click on **Generate Domain** and make sure to use **5000**, which is your port number. 3. Then a link would be generated, you can open that, and it would be your up & running Flask server. 
a year ago
Any issues in generating the domain link for the service, praveen?
tak-praveen
Thank you **versatilevats**
a year ago
Praveen, as the issue was resolved for you, do mark my post as the solution for this query, so that others visiting this thread would be benefitted!!
a year ago
Done!
tak-praveen
Done!
a year ago
Thanks a lot. But you have to mark the post in which I defined the steps to resolve this issue, which is this post: https://station.railway.com/questions/regular-deployment-crashing-c31ec8f6#k62f
I know things are not much intuitive on a new platform
Status changed to Solved nico • 12 months ago