Error Code Encyclopedia

A comprehensive reference of 1360+ error codes across 15 categories including HTTP, JavaScript, Python, TypeScript, Git, Docker, Linux, SQL, and more. Each entry explains the cause and provides a fix.

Use the search bar to type the exact error code (e.g., 404, ECONNREFUSED, TS2304) or use the 'I got this error' paste box to paste your full error message and find matching codes automatically.

Each fix is written based on official documentation and common developer experience. We link to official documentation for every error code so you can verify the information.

Yes! Use our comparison feature to see side-by-side differences between commonly confused error codes, like HTTP 401 vs 403 or EPERM vs EACCES.