/Wiki/sources/honojs__hono/2026/https-hono-dev-llms-full-txt-error-handling-d0290d4d7fcb-error-handling-s0619-c0000.md
Error Handling - hono-docs
Error Handling Source evidence: /Sources/raw/honojs hono/honojs hono.md Canonical citation: https://hono.dev/llms full.txt error handling Summary app.onError...
Error Handling
Source evidence: /Sources/raw/honojshono/honojshono.md Canonical citation: https://hono.dev/llms-full.txt#error-handling
Summary
app.onError allows you to handle uncaught errors and return a custom Response. ``ts twoslash import { Hono } from 'hono' const app = new Hono() // ---cut--- app.onError((err, c) => { console.error(${err}`) return c.text('Custom Error...
Content
app.onError allows you to handle uncaught errors and return a custom Response.
import { Hono } from 'hono'
const app = new Hono()
// ---cut---
app.onError((err, c) => {
console.error(`${err}`)
return c.text('Custom Error Message', 500)
})::: info
If both a parent app and its routes have onError handlers, the route-level handlers get priority.
:::
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