cv2 cannot be detected
l1-p
FREEOP

a month ago

Traceback (most recent call last):

File "/usr/local/lib/python3.10/site-packages/gunicorn/arbiter.py", line 713, in spawn_worker

worker.init_process()

File "/usr/local/lib/python3.10/site-packages/gunicorn/workers/base.py", line 136, in init_process

self.load_wsgi()

File "/usr/local/lib/python3.10/site-packages/gunicorn/workers/base.py", line 148, in load_wsgi

self.wsgi = self.app.wsgi()

File "/usr/local/lib/python3.10/site-packages/gunicorn/app/base.py", line 66, in wsgi

self.callable = self.load()

File "/usr/local/lib/python3.10/site-packages/gunicorn/app/wsgiapp.py", line 57, in load

return self.load_wsgiapp()

File "/usr/local/lib/python3.10/site-packages/gunicorn/app/wsgiapp.py", line 47, in load_wsgiapp

return util.import_app(self.app_uri)

import cv2

ModuleNotFoundError: No module named 'cv2'

No module named 'cv2'

Traceback (most recent call last):

File "/usr/local/lib/python3.10/site-packages/gunicorn/arbiter.py", line 713, in spawn_worker

worker.init_process()

File "/usr/local/lib/python3.10/site-packages/gunicorn/workers/base.py", line 136, in init_process

self.load_wsgi()

File "/usr/local/lib/python3.10/site-packages/gunicorn/workers/base.py", line 148, in load_wsgi

self.wsgi = self.app.wsgi()

File "/usr/local/lib/python3.10/site-packages/gunicorn/app/base.py", line 66, in wsgi

self.callable = self.load()

File "/usr/local/lib/python3.10/site-packages/gunicorn/app/wsgiapp.py", line 57, in load

return self.load_wsgiapp()

File "/usr/local/lib/python3.10/site-packages/gunicorn/app/wsgiapp.py", line 47, in load_wsgiapp

return util.import_app(self.app_uri)

File "/usr/local/lib/python3.10/site-packages/gunicorn/util.py", line 377, 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 1006, in _find_and_load_unlocked

File "<frozen importlib._bootstrap>", line 688, in _load_unlocked

File "<frozen importlib._bootstrap_external>", line 883, in exec_module

File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed

File "/app/app.py", line 5, in

import cv2

ModuleNotFoundError: No module named 'cv2'

No module named 'cv2'

File "/usr/local/lib/python3.10/site-packages/gunicorn/util.py", line 377, in import_app

File "/usr/local/lib/python3.10/site-packages/gunicorn/arbiter.py", line 713, in spawn_worker

worker.init_process()

File "/usr/local/lib/python3.10/site-packages/gunicorn/workers/base.py", line 136, in init_process

mod = importlib.import_module(module)

self.load_wsgi()

File "/usr/local/lib/python3.10/importlib/__init__.py", line 126, in import_module

File "/usr/local/lib/python3.10/site-packages/gunicorn/workers/base.py", line 148, in load_wsgi

self.wsgi = self.app.wsgi()

return _bootstrap._gcd_import(name[level:], package, level)

[2026-04-27 03:09:36 +0000] [3] [ERROR] Exception in worker process

File "/usr/local/lib/python3.10/site-packages/gunicorn/app/base.py", line 66, in wsgi

File "<frozen importlib._bootstrap>", line 1050, in _gcd_import

Traceback (most recent call last):

File "<frozen importlib._bootstrap>", line 1027, in _find_and_load

self.callable = self.load()

File "/usr/local/lib/python3.10/site-packages/gunicorn/app/wsgiapp.py", line 57, in load

return self.load_wsgiapp()

File "/usr/local/lib/python3.10/site-packages/gunicorn/app/wsgiapp.py", line 47, in load_wsgiapp

return util.import_app(self.app_uri)

[2026-04-27 03:09:36 +0000] [3] [INFO] Worker exiting (pid: 3)

File "<frozen importlib._bootstrap>", line 688, in _load_unlocked

import cv2

File "<frozen importlib._bootstrap_external>", line 883, in exec_module

File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed

ModuleNotFoundError: No module named 'cv2'

File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked

File "/app/app.py", line 5, in

No module named 'cv2'

Solved$10 Bounty

Pinned Solution

25 days ago

You need to include python3-opencv as an additional package using the RAILPACK_DEPLOY_APT_PACKAGES="python3-opencv" env var.

See https://railpack.com/guides/installing-packages/

2 Replies

Status changed to Open Railway 26 days ago


Anonymous
FREE

a month ago

You'll likely want to install:

$pip install opencv-python-headless


25 days ago

You need to include python3-opencv as an additional package using the RAILPACK_DEPLOY_APT_PACKAGES="python3-opencv" env var.

See https://railpack.com/guides/installing-packages/


Status changed to Solved medim 8 days ago


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