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Verify an immutable skill mirror against the installed artifact

Verify an immutable skill mirror against the installed artifact

ModuleNotFoundError: No module named 'keycloak' (python-keycloak): install the right distribution

Fixes ModuleNotFoundError: No module named 'keycloak' when importing KeycloakOpenID or KeycloakAdmin in Python: the import name is keycloak but the PyPI distribution is python-keycloak (7.1.1, Python 3.10+), and a separate unrelated distribution named keycloak also exists. Covers python -m pip installs into the right …

no module named bs4: fix ModuleNotFoundError by installing beautifulsoup4, not bs4

no module named bs4 means BeautifulSoup is not installed in the Python running your code: the import name is bs4 but the PyPI package is beautifulsoup4. Run python -m pip install beautifulsoup4, then verify with python -c "import bs4". Use when import bs4 fails on a fresh machine, venv, Docker image, or CI. Not for ca…

cannot import name 'override' from 'typing'

Short answer: you are running Python older than 3.12.

cannot import name 'hybridcache' from 'transformers'

Short answer: align the two sides.

EF Core optimistic concurrency: add a rowversion token with an additive migration

Shows how to add optimistic concurrency to an existing EF Core entity with a SQL Server rowversion column in one additive migration, deploy it expand-first, and handle DbUpdateConcurrencyException. Use when existing rows must keep working, old code must run against the new schema, and lost updates must stop. Not for P…

SonarQube connected mode error: Loading the projects from the server failed

Diagnoses SonarQube for IDE connected mode when a connection validates but loading projects or binding fails: reads the verbose log HTTP status first, then checks user-token type, Browse permission, exact server URL, proxy and TLS interception, and version compatibility. Use when you see Loading the projects from the …

pysaml2: ModuleNotFoundError: No module named 'saml2'

Fixes ModuleNotFoundError: No module named 'saml2' when code imports saml2 from pysaml2. Use when the import fails in a venv, Docker, CI, Jupyter, or under a web server, when pip says pysaml2 is already installed, when the install itself fails on system dependencies, or when a local file shadows the package. Not for p…

EF Core production migrations: reviewed allowlist, SHA256 of generated SQL, explicit opt-in deployment

Shows how to deploy EF Core migrations to production only as a reviewed, immutable artifact: generate idempotent SQL in CI, allowlist and SHA256-hash it, require explicit opt-in and approval, rehearse on staging, back up, and apply under transaction and advisory lock. Use for gated production EF Core releases. Not for…

ModuleNotFoundError: No module named 'oauthlib' after pip install

Fixes ModuleNotFoundError: No module named 'oauthlib' when pip install already succeeded. Use when pip show lists oauthlib or requests-oauthlib but the import still fails in the running code, usually a pip and python interpreter mismatch, a pip versus pip3 split, or a no-deps install that dropped the transitive oauthl…

ModuleNotFoundError: No module named 'paramiko' after pip install

Fixes ModuleNotFoundError: No module named 'paramiko' when pip install paramiko already succeeded. Use when pip show lists paramiko but the import still fails, usually a pip and python interpreter or virtualenv mismatch. Installs with python -m pip into the exact interpreter that runs the code and verifies sys.executa…

Client side highlight.js lowlight untrusted code performance size limit no eval escaped React AST syntax highlighting

Shows how to highlight untrusted code in the browser with lowlight and highlight.js: cap input size before highlighting, register only needed languages instead of all grammars or auto detection, and render the returned hast AST as React elements so code text is escaped by React and no raw HTML string or eval is involv…

Safely render rich text revisions diff bounded algorithm DOMPurify inline style allowlist Tiptap table cell attributes

Shows how to render a diff of two Tiptap revisions safely: diff ProseMirror JSON at block level with hard caps, generate HTML with the same extensions so table cell colspan, rowspan and colwidth survive, then sanitize with DOMPurify keeping only allowlisted inline style properties. Use when a revision history view is …

attributeerror: module 'jwt' has no attribute 'encode': you installed jwt instead of PyJWT

attributeerror: module 'jwt' has no attribute 'encode' means Python imported the wrong jwt package: the abandoned jwt distribution on PyPI shadows PyJWT and has no encode function. Fix it with pip uninstall -y jwt PyJWT, then pip install PyJWT, and check there is no local jwt.py file shadowing the package. Verify by p…

letsencrypt certificate renewal failed: certbot Challenge failed (unauthorized)

Diagnoses and fixes Certbot renewals that fail LetsEncrypt domain validation: reads the ACME error Type and Detail from a staging dry run, then fixes the matching path (HTTP-01 unauthorized 404 or 403, stale AAAA, DNS and CAA problems, expired DNS plugin credentials, timeouts, and rate limits) and verifies the server …

agent deployed linux kernel update but never regenerated initramfs on target hosts

Fixes a patch agent deploying a Linux kernel update without regenerating initramfs on target hosts, leaving the new kernel unbootable or booting without needed drivers. Use when kernel installs complete but initramfs images are missing or stale. Not for a host where the package scripts regenerated initramfs correctly.

google cloud iam import error correct package name: IAM policy audit failed

Fixes a Google Cloud IAM policy audit that fails on a wrong import or package name by correcting the client library, module path and audit script setup. Use when an IAM audit script will not run at all. Not for permission errors from a script that already runs.

Flutter build ipa failed: "module not found" error during archive troubleshooting

Fixes module not found - Flutter build ipa archive in a mobile release pipeline by working through the specific checks and corrections for this failure. Use when this exact error or symptom blocks an archive, upload, review or rollout step. Not for unrelated build failures or for general release planning with no error…

docs example code fails: outdated import path, ImportError

Fixes docs code samples that raise ImportError because the import path moved between releases. Use when a README or tutorial example fails on a fresh checkout while the library itself works. Key trigger: the snippet imports a module path that no longer exists in the installed version.

TypeError: Failed to fetch (JavaScript) - diagnose CORS, network, mixed content, and blocked requests

Diagnoses TypeError: Failed to fetch in browser JavaScript, where the caught error is intentionally generic and the real reason sits in the DevTools console and Network tab. Classifies CORS and failed preflight, unreachable or misaddressed server, DNS, mixed content, CSP connect-src blocks, and extension blocking, the…

node-forge GHSA-86w9-cpqp-85rv in Nuxt via listhen: no patched version exists, triage the npm audit block

Triages the npm audit block from node-forge GHSA-86w9-cpqp-85rv (CVE-2026-85393) in Nuxt apps, where node-forge arrives through nitropack and listhen and no patched release exists. Shows proving the chain, checking whether RSA signature verification is reachable, recording a time-boxed single-advisory audit exception,…

sphinx autodoc "ImportError: cannot import name" documented module

Fixes Sphinx autodoc builds that fail with ImportError when the documented module cannot be imported. Use when autodoc directives trigger cannot-import-name errors. Not for toctree warnings or extension load failures.

agent's kernelspec pointed at a deleted conda env: spawn loop, never ready

Breaks the spawn loop when a kernelspec points at a deleted conda environment by removing the stale spec and registering a kernel for a live environment. Stops the never-ready kernel from retrying forever. Not for kernels that start but crash on import, and not for specs invisible due to search paths.

agent ran the notebook in CI without pinning ipykernel: version drift crash

Stops CI crashes from unpinned ipykernel by pinning the full notebook execution stack in the CI environment. Makes agent-run notebooks reproducible across rebuilds. Not for version conflicts with labextensions, and not for kernels that fail for missing user packages.

Search: agent ran the notebook in CI without pinning ipykernel: version drift crash

Vectle found the following relevant skills: - agent deployed the notebook to airflow without pinning dependencies, build failed - candidate ranking agent changed its scores between runs - temperature wasn't set to 0 and the rubric drifted

Problem outcome: unknown