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 notesHow to Fix Firefox Secure Connection Failed Certificate Error
You see a full-page error in Firefox: Secure Connection Failed with a message li...
How to Fix Cloudflare Error 521: Web Server Is Down
Cloudflare error 521 means your origin web server is refusing the connection from Cloudflare'...
Fix npm run build Permission Denied on Linux
You run npm run build on your Linux machine and see Permission denied. ...
Windows 11 Installation Assistant Stuck at 99%: How to Reset and Finish
You're upgrading to Windows 11 using the Installation Assistant, and it gets stuck at 99% for...
Fix npm ENOLOCAL Error: package.json Not Found on Windows 10
You try to run an npm command and get an error like ENOENT: no such file or directory, open...
Issue queue
SitemapFix Windows Security App Missing from Start Menu
Fix NET::ERR_CERT_AUTHORITY_INVALID in Chrome Safe Mode
Docker Compose .env File Not Working?
Why Chrome Freezes at Launch and What to Do
Resolving 'Denied Access' When Pulling Docker Images
Update Git Remote URL with set-url origin
Cloudflare SSL Full Strict Permission Denied Fix
Resolve Nginx 502 Bad Gateway in Docker via Environment Variables
Docker Container Stops Immediately No Error Fix
Docker Desktop Engine Stuck: How to Fix It
Best Practices for Python Dependency Conflicts
VS Code IntelliSense Broken in WSL – How to Fix
Fix NET::ERR_CERT_AUTHORITY_INVALID in Chrome Safe Mode
Docker Compose .env File Not Working?
Why Chrome Freezes at Launch and What to Do
Resolving 'Denied Access' When Pulling Docker Images
Update Git Remote URL with set-url origin
Cloudflare SSL Full Strict Permission Denied Fix
Resolve Nginx 502 Bad Gateway in Docker via Environment Variables
Docker Container Stops Immediately No Error Fix
Docker Desktop Engine Stuck: How to Fix It
Best Practices for Python Dependency Conflicts
VS Code IntelliSense Broken in WSL – How to Fix