First error:

Warning: Cannot update a component (`HotReload`) while rendering a different component (`Router`). To locate the bad setState() call inside `Router`, follow the stack trace as described in https://reactjs.org/link/setstate-in-render
    at Router (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/client/components/app-router.js:207:11)
    at ErrorBoundaryHandler (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/client/components/error-boundary.js:113:9)
    at ErrorBoundary (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/client/components/error-boundary.js:160:11)
    at AppRouter (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/client/components/app-router.js:577:13)
    at ServerRoot (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/client/app-index.js:112:27)
    at Root (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/client/app-index.js:117:11)


Second error:

Uncaught Error: Rendered more hooks than during the previous render.
    at updateWorkInProgressHook (react-dom.development.js:11435:15)
    at updateMemo (react-dom.development.js:12613:14)
    at Object.useMemo (react-dom.development.js:13563:16)
    at useMemo (react.development.js:2537:21)
    at Router (app-router.js:232:59)
    at renderWithHooks (react-dom.development.js:11121:18)
    at updateFunctionComponent (react-dom.development.js:16290:20)
    at beginWork$1 (react-dom.development.js:18472:16)
    at HTMLUnknownElement.callCallback (react-dom.development.js:20565:14)
    at Object.invokeGuardedCallbackImpl (react-dom.development.js:20614:16)
    at invokeGuardedCallback (react-dom.development.js:20689:29)
    at beginWork (react-dom.development.js:26949:7)
    at performUnitOfWork (react-dom.development.js:25748:12)
    at workLoopSync (react-dom.development.js:25464:5)
    at renderRootSync (react-dom.development.js:25419:7)
    at recoverFromConcurrentError (react-dom.development.js:24597:20)
    at performConcurrentWorkOnRoot (react-dom.development.js:24542:26)
    at workLoop (scheduler.development.js:256:34)
    at flushWork (scheduler.development.js:225:14)
    at MessagePort.performWorkUntilDeadline (scheduler.development.js:534:21)

Third error:

The above error occurred in the <Router> component:

    at Router (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/client/components/app-router.js:207:11)
    at ErrorBoundaryHandler (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/client/components/error-boundary.js:113:9)
    at ErrorBoundary (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/client/components/error-boundary.js:160:11)
    at AppRouter (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/client/components/app-router.js:577:13)
    at ServerRoot (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/client/app-index.js:112:27)
    at Root (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/client/app-index.js:117:11)

React will try to recreate this component tree from scratch using the error boundary you provided, ErrorBoundaryHandler.