Checklists for software errors, setup, and tool workflows.

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Latest checklists

You run npm install or npm start and get npm ERR! package.json no...

Fix ERR_NAME_NOT_RESOLVED on All Sites in Chrome
If Chrome shows ERR_NAME_NOT_RESOLVED on every site you visit, it means your bro...

Fix DNS Probe Finished NXDOMAIN Error in Windows 10
When you see "DNS_PROBE_FINISHED_NXDOMAIN" in Chrome or other browsers, it means the DNS ...

Fix Nginx Upstream Connection Refused Error
When Nginx returns upstream connection refused in your error logs, it means Nginx tr...

Fix Node Sass Build Failed: Sass Not Found
When running a Node.js project that uses Node Sass, you might encounter a build error like ...

How to Fix Git 'index.lock' File Exists Error
When you see fatal: Unable to create 'path/.git/index.lock': File exists., G...