React-create-app configuration react-router error report, no mind, beginner react, to ask Daniel for help?

1. First take a look at the error
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2.react

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this is the routing file

Mar.04,2021

export default () => {
    return(
        <Route path='/main' component={Main} />
    );
}

reference:
https://github.com/allan2code.

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-64f5-1bf5f96-53658.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bf5f96-53658.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?