UnhandledPromiseRejectionWarning in Node.js — What It Means and How to Fix It

UnhandledPromiseRejectionWarning warns that a Promise was rejected but nothing handled that rejection with a .catch() or try/catch.

Key points

• Newer Node versions terminate the process entirely on an unhandled rejection instead of just warning
• Always attach a .catch() (or wrap an awaited call in try/catch) to any Promise that can reject