facebook/react · error · Error
454
454
Error message
React expected a <body> element (document.body) to exist in the Document but one was not found. React never removes the body for any Document it renders into so the cause is likely in some other script running on this page.
What it means
Error "React expected a <body> element (document.body) to exist in the Document but one was not found. React never removes the body for any Document it renders into so the cause is likely in some other script running on this page." thrown in facebook/react.
Source
Thrown at packages/react-dom-bindings/src/client/ReactFiberConfigDOM.js:4856
);
}
return documentElement;
}
case 'head': {
const head = ownerDocument.head;
if (!head) {
throw new Error(
'React expected a <head> element (document.head) to exist in the Document but one was' +
' not found. React never removes the head for any Document it renders into so' +
' the cause is likely in some other script running on this page.',
);
}
return head;
}
case 'body': {
const body = ownerDocument.body;
if (!body) {
throw new Error(
'React expected a <body> element (document.body) to exist in the Document but one was' +
' not found. React never removes the body for any Document it renders into so' +
' the cause is likely in some other script running on this page.',
);
}
return body;
}
default: {
throw new Error(
'resolveSingletonInstance was called with an element type that is not supported. This is a bug in React.',
);
}
}
}
export function acquireSingletonInstance(
type: string,
props: Props,View on GitHub (pinned to eafeac097b)
When it happens
Trigger: Thrown at packages/react-dom-bindings/src/client/ReactFiberConfigDOM.js:4856 when the library encounters an invalid state.
Common situations: See trigger scenarios.
AI-assisted analysis of facebook/react@eafeac097b (2026-08-21).
Data as JSON: /api/errors/b603072224795f7e.
Report an issue: GitHub.