Why do request data sometimes get undefined,?

problem description

I render the page with a long list of antd-mobile , and use axios to send a request. Sometimes some of the data is not available, and sometimes there is no problem. Why?

related codes

/ / Please paste the code text below (do not replace the code with pictures)
I used the transformResponse configuration item when I created the instance with axios .

   


Test with postman to see if there is any data. If so, there is something wrong with your code

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-64f5-1e52222-45189.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e52222-45189.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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