UnhandledPromiseRejectionWarning
This error matches known, documented patterns with reliable solutions.
Quick Fix (Most Common Solution)
- Add .catch() to all promises
- Wrap async/await in try/catch
Seeing "UnhandledPromiseRejectionWarning"? This error can be frustrating, but it's usually fixable. It typically affects your development workflow or system. Below you'll find clear, step-by-step solutions to resolve this issue.
What This Error Means
A promise was rejected but there was no .catch() or try/catch to handle it.
Frequently documented in developer and vendor support forums.
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Common Causes
- Missing .catch() on promise
- No try/catch around await
- Error in promise chain
How to Fix
- Add .catch() to all promises
- Wrap async/await in try/catch
- Add global unhandledRejection handler
Last reviewed: March 2026 How we review solutions
Optional follow-up
Some users ask whether saving fixes for recurring errors would be useful when the same issue appears again.
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Frequently Asked Questions
Will this crash my app?
In Node 15+, unhandled rejections terminate the process by default.
How do I catch all rejections?
process.on("unhandledRejection", handler) catches them globally.
Related Resources
Also Known As
- Node.js error
- Node runtime error
- JavaScript server error
- Node exception
Common Search Variations
- "node js error fix"
- "node command not working"
- "node app crashing"
- "javascript server error solution"
- "node runtime crash fix"
- "how to debug node error"
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