[Bug]: <Activity /> doc page / 19.2.x examples crashing. #8034
Description
Summary
<Activity /> doc page second example crashing.
Looks like the same might be true for other features that are using the new React 19.2.
Perhaps the tool wasn't correctly updated to use the latest react version in prod?
Page
https://react.dev/reference/react/Activity
Details
<Activity /> doc page second example crashing, right after the phrase: and check out the new behavior:
Error in console:
Uncaught Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.
Check the render method of `App`.
at createFiberFromTypeAndProps (786946de.sandpack-bundler-4bw.pages.dev/node_modules/react-dom/cjs/react-dom-client.development.js:11:107370)
at createFiberFromElement (786946de.sandpack-bundler-4bw.pages.dev/node_modules/react-dom/cjs/react-dom-client.development.js:11:107754)
at createChild (786946de.sandpack-bundler-4bw.pages.dev/node_modules/react-dom/cjs/react-dom-client.development.js:11:144463)
at reconcileChildrenArray (786946de.sandpack-bundler-4bw.pages.dev/node_modules/react-dom/cjs/react-dom-client.development.js:11:151589)
at reconcileChildFibersImpl (786946de.sandpack-bundler-4bw.pages.dev/node_modules/react-dom/cjs/react-dom-client.development.js:11:159233)
at eval (786946de.sandpack-bundler-4bw.pages.dev/node_modules/react-dom/cjs/react-dom-client.development.js:11:162207)
at reconcileChildren (786946de.sandpack-bundler-4bw.pages.dev/node_modules/react-dom/cjs/react-dom-client.development.js:11:231764)
at updateFunctionComponent (786946de.sandpack-bundler-4bw.pages.dev/node_modules/react-dom/cjs/react-dom-client.development.js:11:239506)
at beginWork (786946de.sandpack-bundler-4bw.pages.dev/node_modules/react-dom/cjs/react-dom-client.development.js:11:285774)
at runWithFiberInDEV (786946de.sandpack-bundler-4bw.pages.dev/node_modules/react-dom/cjs/react-dom-client.development.js:11:22293)
at performUnitOfWork (786946de.sandpack-bundler-4bw.pages.dev/node_modules/react-dom/cjs/react-dom-client.development.js:11:460170)
at workLoopSync (786946de.sandpack-bundler-4bw.pages.dev/node_modules/react-dom/cjs/react-dom-client.development.js:11:456120)
at renderRootSync (786946de.sandpack-bundler-4bw.pages.dev/node_modules/react-dom/cjs/react-dom-client.development.js:11:455616)
at performWorkOnRoot (786946de.sandpack-bundler-4bw.pages.dev/node_modules/react-dom/cjs/react-dom-client.development.js:11:437796)
at performWorkOnRootViaSchedulerTask (786946de.sandpack-bundler-4bw.pages.dev/node_modules/react-dom/cjs/react-dom-client.development.js:11:504324)
at MessagePort.performWorkUntilDeadline (786946de.sandpack-bundler-4bw.pages.dev/node_modules/scheduler/cjs/scheduler.development.js:9:626)