How to implement the CodeSplitting of react-router in react-loadable?

now there is a large amount of code that needs to be optimized for on-demand loading.
found the plug-in react-loadable on the official website.
react-loadable--githup
is configured as follows. Open the console network and there is no chunk.js
to ask the boss for advice.
the demo I wrote myself is similar to the example I found on the Internet. Why can"t it be realized?
ask the boss to take a look at

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Html5 javascript react.js react-router4 react-router
Mar.12,2021

have you build yet?

the development environment seems to be invalid

the development environment is different. Package it to the test environment and have a look at it

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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-64f5-1e9929e-1731.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e9929e-1731.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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