npm run build Failed: Troubleshooting Checklist
When npm run build fails, the error message can be cryptic. This checklist walks thr...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix VS Code Git Not Detecting Changes After .gitignore Update
After updating your .gitignore file, you might notice that VS Code's Git extensi...
How to Fix Cloudflare Origin Certificate Validation Failed
If you see a "validation failed" error when setting up or using a Cloudflare Origin Certi...
Fix Nginx Configuration Test Failure for Upstream Directive
When you run nginx -t and get an error involving the upstream directive...
Nginx Upstream Connection Refused: Diagnosis and Fixes
When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...
Fix npm run build Failed on Windows: Common Causes and Solutions
When you run npm run build on Windows and it fails, the error message can be cryptic...
Issue queue
SitemapDocker Network Not Found in Swarm Mode: Fixes & Causes
Cloudflare 521: Server Not Responding Fix
Fix Secure Connection Failed in Firefox
Fix Python UnicodeDecodeError with os.listdir
Fix Windows Update Service Not Running Due to Group Policy
Resolve 0x800f081f Error with Clean Boot Troubleshooting
How to Resolve Git index.lock Permission Denied
VS Code Workspace Save Permission Error Fix
Docker Engine Stopped Due to Firewall – How to Fix
Chrome Status Access Violation: Fixing Extension Conflicts
Git Merge Conflict: Check Differences Between Branches
Fix WiFi No Internet After Windows 11 Update
Cloudflare 521: Server Not Responding Fix
Fix Secure Connection Failed in Firefox
Fix Python UnicodeDecodeError with os.listdir
Fix Windows Update Service Not Running Due to Group Policy
Resolve 0x800f081f Error with Clean Boot Troubleshooting
How to Resolve Git index.lock Permission Denied
VS Code Workspace Save Permission Error Fix
Docker Engine Stopped Due to Firewall – How to Fix
Chrome Status Access Violation: Fixing Extension Conflicts
Git Merge Conflict: Check Differences Between Branches
Fix WiFi No Internet After Windows 11 Update