Skip to content
JS
React error

React error #142

Expected onBeforeMountComponent() parent and onSetChildren() to be consistent (%s has parents %s and %s).

Reference entryReactFetched
This is a reference entry from React error codes. A full explanation with fixes has not been written yet.

The error message

Expected onBeforeMountComponent() parent and onSetChildren() to be consistent (%s has parents %s and %s).
As listed by React error codes

%s is filled in by React at runtime.

Details

Category
Minified React error
Severity
error
Runtime
both

Related errors

or press Cmd/Ctrl + Enter. The text is only sent to this site to match it.
Source: React error codes. Data fetched 2026-09-25T01:43:12.926Z.