Checklists for software errors, setup, and tool workflows.

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Fix DNS Probe Finished NXDOMAIN After Changing DNS

After updating your DNS settings—perhaps to use Google Public DNS or Cloudflare—you might see the...

Fix Docker 'network not found' Error for Custom Networks

You create a custom Docker network, then try to run a container attached to it, but get an error ...

Fix 'nginx configuration test failed invalid parameter'

When running nginx -t to test configuration, seeing "nginx: [emerg] inva...

Docker Container Exits Immediately with Code 0: Fixes
You run a Docker container and it stops almost instantly with exit code 0. This means the main pr...

Fix VSCode Git Auth Failed: Expired Token
You're working in Visual Studio Code, try to push or pull, and see an error like "Git: Au...

Fix Nginx Upstream Connection Refused Socket Error
When Nginx returns a 502 Bad Gateway or logs upstream connection refused

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix DNS Probe Finished NXDOMAIN After Changing DNS

Fix Docker 'network not found' Error for Custom Networks

Fix 'nginx configuration test failed invalid parameter'

Docker Container Exits Immediately with Code 0: Fixes

Fix VSCode Git Auth Failed: Expired Token

Fix Nginx Upstream Connection Refused Socket Error

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