Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

When installing Python packages with pip, you might see an error ending with exit code 1

Fix npm ERR! enoent ENOENT: package.json Not Found in node_modules
You run npm install or npm start and get something like:
...

Fix Docker Compose Environment Variable Not Set on Build
You've defined environment variables in your docker-compose.yml under envi...

Docker Volume Permission Denied: Step-by-Step Checklist
You mount a volume into a Docker container and get Permission denied when trying to ...

Fix DNS Probe Finished NXDOMAIN on Router: Step-by-Step
You're browsing and suddenly Chrome shows 'DNS_PROBE_FINISHED_NXDOMAIN'. This means y...

Fix VSCode Breakpoints Not Hitting in TypeScript
You set a breakpoint in a TypeScript file, run the debugger, and execution never pauses. This is ...