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Graph/celery-app-broker-misconfig

AntiPattern

Celery App Misconfiguration

celery-app-broker-misconfig

Celery’s app/broker configuration points at the wrong module or omits the broker URL, so workers may start and even report a successful Redis connection but still fail to execute tasks correctly.

Node Details

Public graph metadata

Updated6/23/2026

Connections

30 linked nodes

MATCHESSolution

`omnimart@0.1.0 start /app/apps/frontend next start next: not found` — Frontend Dockerfile.

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Run vercel build --prod --token=***. Tension: Error: spawn pnpm ENOENT. Outcome: Install Vercel CLI.

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I had to change the LOCAL git config — git config --global user.name "Your Name" git config --global user.email "your.email@example.com". Tension: The problem was the LOCAL git config name and email did not match the one connected to vercel via "connect git account". Outcome: This is what their support told me to do and it solved the problem.

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Need to rename playwright's chromium object to something else — This worked for me on Vercel, I use it in the worker that runs in background as a cron job. Tension: args: chromium.args, executablePath: await chromium.executablePath(), headless: true. Outcome: await playwright.launch(.

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Configure Vercel to build the client with @vercel/static-build (output dist) and serve the client/dist from the Express server in production, using server-side express.static plus a catch-all route that returns client/dist/index.html. Add rewrites in vercel.json to route /api/* to the server entry and all other paths to /server/index.js.

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If you have the vercel.json configuration file in your application, remove it. Tension: It is mostly likely the cause. Outcome: remove it.

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You need to add the hostname and http protocol from Vercel to your CORS `allowedOrigins` array. Outcome: https://askida-backend.vercel.app.

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How to fix this issue — Next.js project deployed on Vercel. Tension: SQLite is incompatible with serverless environments. Outcome: Consider cloud databases like Postgres Neon, Turso, or Vercel Postgres.

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I do have `credentials: include` in all of my requests — on vercel. Tension: the cookies were not persistent. Outcome: This works great on localhost but idk what happened after the deployment.

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Failed to launch the browser process! — The application works correctly on my local but not on vercel. Tension: error while loading shared libraries: libnss3.so: cannot open shared object file: No such file or directory. Outcome: I have been able to fix this issue by changing the Node.js version to 18.x.

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I change config.yml and changed system.url-prefix: 'https:/IP' to system.url-prefix: 'https:/sentry.domain.com' — stop containers then reload daemon restart docker start containers. Tension: Origin checking failed - https://sentry-domain.com does not match any trusted origins. Outcome: stop containers then reload daemon restart docker start containers.

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Once you change your configuration, you'll need to restart all Sentry services — according to the docs. Outcome: by running docker-compose restart web worker cron sentry-cleanup (or just docker-compose restart to restart everything).

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Verify Sentry is initialized in the deployed process and that the DSN/config values are correctly applied; adjust Sentry initialization settings (e.g., disable PII with `send_default_pii=False` and/or enable `debug=True`) and ensure the server start command/environment matches what works locally (so events are emitted).

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Always run Uvicorn from project root:. Tension: Add `--reload-dir` for extra folders (like your SQL hooks):. Outcome: python -m uvicorn main:app --reload --reload-dir path\to\hooks.

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Avoid letting the application’s argparse parse Uvicorn’s CLI arguments; instead handle your own arguments separately (or create and pass reload/host/port programmatically into uvicorn.run) so Uvicorn receives only its expected parameters.

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Outcome: CMD ["uv", "run", "retrofun.main:app_api", "--host", "0.0.0.0", "--port", "5555"].

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To manage background processes. Outcome: consider increasing resource allocations or using asynchronous task queues like Celery.

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I switched to using directly Uvicorn with the following command — Previously, I used: `fastapi run --workers 4 app/main.py`. Tension: the redirection then fails. Outcome: `uvicorn your_app:app --host 0.0.0.0 --port 8000 --proxy-headers --forwarded-allow-ips "*"`.

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I tried adding a `startup.sh` file with this command: `gunicorn -w 4 -k uvicorn.workers.UvicornWorker main:app`, without any luck. — Azure App Service. Tension: without any luck.

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launched the web app with the built-in fastapi command — Now my dockerfile looks like this. Tension: problem seems to be gone. Outcome: CMD ["fastapi", "run", "main", "--port", "8121", "--workers", "3"].

MATCHESSolution

you might need to add the path to the module like so — Dockerfile. Tension: Depending on where your Dockerfile is in your structure, which is unclear. Outcome: CMD ["uvicorn", "backend.app.main:app", "--host", "0.0.0.0", "--port", "8000"].

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Use python -m uvicorn with the correct module path in ENTRYPOINT

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adding Celery to your project — handling Stripe webhooks. Tension: This would allow for the processing of the webhook event payload to fail once (or more). Outcome: retry the operation.

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If you want to use Consumption Only container app environment — do NOT include the workloadProfile section in the subnet Bicep configuration. Tension: This means you don't need to add delegations.

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Remember to call the trigger for each broker (`--entity-name`). — via Kafka Admin API. Tension: Also it will reconfigure all configured listeners. Outcome: Remember to call the trigger for each broker (`--entity-name`).

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Stage 2 (startup). Tension: Lazy import keeps cold-start light so the healthcheck passes; the memory bump covers the import when the handler actually runs. Outcome: functions-framework can bind the port.

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Don't introduce a NEW package export that test-loaded modules import at module scope — Here: a `roleClient(role?)` helper in the consumer package (`etl/llm-route.ts`). Tension: it forces you to update every `vi.mock` factory, and missing one re-breaks CI.

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Adding it fixed my issue. Outcome: from .celery import app as celery_app.

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So after changing this line to the following, it worked for me. Outcome: app = Celery('projectSlackBot', broker=settings.BROKER_URL).

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Separate the Django web server and Celery worker into different containers or services

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