Eggjs has one request and executed many interface functions

an online lottery item (eggjs+mysql) that occasionally has duplicate data in the database. I looked at the request log and found that two of the same requests were printed twice, resulting in two requests for interface functions. I don"t know if it is caused by request blocking under concurrent requests, how to solve it? Please give guidance to Daniel!

Apr.01,2021
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-64f5-1bf153b-31d72.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bf153b-31d72.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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