Checklists for software errors, setup, and tool workflows.

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Fix ERR_CERT_AUTHORITY_INVALID on Localhost

When testing a local web app, you may see ERR_CERT_AUTHORITY_INVALID in Chrome or si...

Fix 'git remote add origin already exists' Error

When you run git remote add origin <url> and see fatal: remote origin al...

VSCode Terminal Not Opening After Extension Install: Fix
You install a new extension in Visual Studio Code, restart or reload, and then the terminal panel...

Fix Git Push Rejected Non Fast Forward Error
When you try to push commits to a remote repository and see “rejected – non-fast-forward”, it mea...

Fix Git Push Non-Fast-Forward and Permission Denied Errors
When you run git push and get an error like ! [rejected] main -> main (non-...

Fixing Node Sass Build Failures on Linux
If you're running npm install on a Linux machine and get a build failure for

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix ERR_CERT_AUTHORITY_INVALID on Localhost

Fix 'git remote add origin already exists' Error

VSCode Terminal Not Opening After Extension Install: Fix

Fix Git Push Rejected Non Fast Forward Error

Fix Git Push Non-Fast-Forward and Permission Denied Errors

Fixing Node Sass Build Failures on Linux

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