Invalid react-router v2.3.0 indexRedirect

{
  path: "/",
  component: Layout,
  // indexRedirect:{to:"/main"},
  indexRoute: { onEnter: (nextState, replace) => replace("/main") },
  childRoutes: [
    Main,
    LoginPage,
    NotFound,
  ],
}

the indexRedirect: {to:"/main"} written in the above note is invalid (is it wrong)

switch to indexRoute can jump normally

version: react-router v2.3.0

Mar.05,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1bf04a8-31462.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bf04a8-31462.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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