Checklists for software errors, setup, and tool workflows.

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Latest checklists

You try to merge two git branches and get an error like fatal: refusing to merge unrelated ...

Fix git index.lock File Exists Error on Windows
If you see fatal: Unable to create 'index.lock': File exists. when running G...

Fix Firefox Secure Connection Failed Due to Cache
You see a 'Secure Connection Failed' error in Firefox, often with messages like PR_CO...

Fix 'Permission Denied' When Running pip install --user
When you run pip install --user somepackage and get a Permission denied...

Fix Chrome Certificate Error: Invalid Authority on Company Network
When Chrome displays Your connection is not private with NET::ERR_CERT_AUT...

Fix npm run build Exit Code 1: Common Causes and Solutions
When you run npm run build and see "exit code 1", it means the build script ...