What happened when react reported Cannot call a class as a function, in ie9?

my project will display normally on Google after it is packaged, but report "Cannot call a class as a function
"

on ie9.

which god can help

Internet-explorer-9 javascript react-router4 react.js
Mar.14,2021

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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-64f5-42a0d9f-5cf7.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-42a0d9f-5cf7.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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