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Graph/runtime-toolchain-mismatch

Pattern

Runtime Toolchain Mismatch

runtime-toolchain-mismatch

A recurring container build/deploy shape where the app’s dependencies and entrypoint tools (e.g., fastapi/uvicorn) are installed in a different Python/base image or not present in the runtime, leading to missing executables in $PATH.

Node Details

Public graph metadata

Updated4/30/2026

Connections

30 linked nodes

Unhandled Runtime Error Error: Cannot find module '@tanstack/query-core' — when i try "yarn run dev".

Docker container cannot find built server entry file at /app/apps/backend/dist/server.js

next start fails because the frontend runtime cannot find the Next.js binary

Cannot find matching keyid — RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --prod --frozen-lockfile. Tension: The deployment now works again, the app is back up. Outcome: I found a quick fix by changing my Dockerfile.

When publishing the Vite-built package, the generated dist output includes internal build artifacts such as node_modules/_virtual and/or breaks dependency resolution because subpath imports like react/jsx-runtime aren’t treated as externals. This results in unwanted contents being packaged and incorrect bundling for NPM publication.

When running `docker build -t frontend .`. Tension: I am not sure how to resolve this issue.

Follow-up Docker stages cannot find the locally built base image on M1 Mac

it seems to me that the `--prebuilt` tag prevents the whole source code to be shared/deployed to Vercel — deploy a FastAPI app using Github Actions to Vercel. Tension: apparently, Vercel can’t detect `.vercel/output/builds.json` file/folder ev. Outcome: without using the `--prebuilt` tag.

During Vercel builds of a Turborepo using turbo, the build fails to access required environment variables (e.g., DATABASE_URL) even though they are set in the Vercel dashboard. Locally, values from .env.local work, but CI/build cannot find them.

Deploying to Vercel fails to apply the desired npm install flags (e.g., `--legacy-peer-deps`), causing dependency/peer conflicts during deployment.

Zone mismatch. — during runApp. Tension: The Flutter bindings were initialized in a different zone than is now being used. Outcome: This will likely cause confusion and bugs as any zone-specific configurat.

Does modern FastAPI need Gunicorn? — For a long time Gunicorn+Uvicorn was the default setup for running FastAPI in production. Tension: I haven't found any other sources to verify this statement. Outcome: No.

Running the Uvicorn CLI with typical FastAPI arguments (e.g., main:app, --port, --host, --reload) fails with "uvicorn: error: unrecognized arguments". The server launch never starts correctly.

ERROR: Error loading ASGI app. Could not import module "main". — run through Docker. Tension: I don't find the error because my directory is organized the way it should be. Outcome: CMD ["uvicorn", "backend.app.main:app", "--host", "0.0.0.0", "--port", "8000"].

exec: "fastapi": executable file not found in $PATH: unknown — Dockerize my fastapi application. Tension: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process.

Adding `py_eureka_client` to a FastAPI app during module import causes `RuntimeError: Cannot run the event loop while another loop is running` when running with `uvicorn --reload`.

gunicorn is missing from the runtime stage, so the container cannot start the app

The build failed because private dependencies cannot be found. Tension: The python build should work with no issues. Outcome: private dependencies cannot be found.

Installing Node.js 22.13.1-r0 in an Alpine-based Forgejo action container causes runtime relocation errors when GitHub Checkout starts, indicating missing sqlite3-related symbols in /usr/bin/node. The issue did not occur when using nodejs 22.11.0-r1.

Docker is not installed on the macOS runners

echo ACTIONS_RUNTIME_TOKEN=$(env | grep ACTIONS_RUNTIME_TOKEN) — act -j build-and-deploy -W .github/workflows/deploy_frontend.yml. Tension: I have to run with the extra `--artifact-server-path /tmp/artifacts`. Outcome: it solves it.

Azure CLI webapp deploy uses the wrong local path for the package or template

docker-entrypoint.sh: exec format error — build the image in GitHub Actions and post it in Github Package Registry. Outcome: You have a broken image.

graph cleanup, MCP config, and hooks defaulted to production inErrata URLs — A CTF demo benchmark was intended to run entirely against a local compose stack. Tension: The local compose API also failed after rebuild because production-mode startup required a Turnstile secret, and its healthcheck used wget even though the Node slim image did not include wget. Outcome: The local compose API also failed after rebuild because production-mode startup required a Turnstile secret.

Opening the Flutter project in VS Code fails with a Gradle build error stating the toolchain at '/usr/lib/jvm/java-21-openjdk' does not provide the required capability 'JAVA_COMPILER' for compiling Android test Java sources.

Building wheel for backports.zoneinfo (pyproject.toml): started — The Heroku Build is returning this error when I'm trying to deploy a Django application. Tension: No Python version was specified. Using the buildpack default: python-3.10.4. Outcome: Building wheels for collected packages: backports.zoneinfo.

Docker reports that the requested image platform (linux/amd64) does not match the detected host platform (linux/arm64/v8), and GPU support fails with "could not select device driver" when running the container.

I am building Django app where I want to run Django and playwright images in 1 container in Docker Desktop (locally).

My multi-stage Docker build. Outcome: how do I debug which file is triggering it?

Models struggle with multi-tool function calling but work well with a single bash tool. — Building a Flask ecommerce app for Tor with local LLM agents. Tension: No tool-selection decision fatigue. Outcome: work well with a single bash tool.

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