Fix Nginx Upstream Connection Refused in Proxy Pass
When Nginx returns a 502 Bad Gateway or logs upstream connection refused
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listWindows Search Index Not Finding Files: How to Fix
Windows Search stops finding files for a variety of reasons. The index might be corrupted, settin...
Fix ENOENT Error: package.json Not Found in React App
When running npm start or npm install in a React app, you may see an er...
Fix 'Git Remote Origin Already Exists' Error
When you try to add a remote named 'origin' but Git tells you it already exists, it's...
Fix Git Merge Conflicts with Deleted Files
You're in the middle of a merge and git stops with a conflict. One side deleted a file, the o...
How to Fix Cloudflare 521 Error with Wildcard Subdomains
If you're seeing a Cloudflare 521 error on a wildcard subdomain (e.g., *.example.com), the or...
Topic paths
Quick titles
How to Increase Node.js Heap Size for Module LoadingHow to Rebuild Search Index in WindowsHow to Fix Global Package Errors After Node UpdateFixing Cloudflare Wildcard Subdomain Proxy ErrorsChrome Extensions Not Loading on Mac? Here's How to Fix ItHow to Force Windows Search to Exclude a FolderFix Stubborn Git index.lock File Not DeletingHow to Solve VSCode Permission Denied for Extensions