facebook/react · error · Error
452
452
Error message
React expected an <html> element (document.documentElement) to exist in the Document but one was not found. React never removes the documentElement 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 an <html> element (document.documentElement) to exist in the Document but one was not found. React never removes the documentElement 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:4834
props: Props,
rootContainerInstance: Container,
hostContext: HostContext,
validateDOMNestingDev: boolean,
): Instance {
if (__DEV__) {
const hostContextDev = hostContext as any as HostContextDev;
if (validateDOMNestingDev) {
validateDOMNesting(type, hostContextDev.ancestorInfo);
}
}
const ownerDocument = getOwnerDocumentFromRootContainer(
rootContainerInstance,
);
switch (type) {
case 'html': {
const documentElement = ownerDocument.documentElement;
if (!documentElement) {
throw new Error(
'React expected an <html> element (document.documentElement) to exist in the Document but one was' +
' not found. React never removes the documentElement for any Document it renders into so' +
' the cause is likely in some other script running on this page.',
);
}
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;
}View on GitHub (pinned to eafeac097b)
When it happens
Trigger: Thrown at packages/react-dom-bindings/src/client/ReactFiberConfigDOM.js:4834 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/0830d891fa82891d.
Report an issue: GitHub.