Checklists for software errors, setup, and tool workflows.

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Docker Container Exits Immediately: Diagnosing Out of Memory

You start a Docker container and it exits within seconds. The logs show nothing obvious, or they ...

How to Remove the Externally Managed Environment Flag in pip

If you're seeing error: externally-managed-environment when using pip on a moder...

Fix Chrome Certificate Error: Invalid Authority with Proxy Settings

You open Chrome and see NET::ERR_CERT_AUTHORITY_INVALID on every site, even trus...

How to Fix Docker Container Exits Immediately with Permission Denied

You start a Docker container, but it exits immediately. Running docker logs shows a ...

Update Git SSL Certificates to Fix 'unable to get local issuer'

If you see fatal: unable to access 'https://...': SSL certificate problem: unable t...

DNS Probe Finished NXDOMAIN: Internet Connection but No Browsing Fix
You see the error 'DNS probe finished NXDOMAIN' on Chrome or other browsers, yet your int...