After vue2 el-upload uploads files (regardless of success or failure), how to clear the contents of files in el-upload?

after uploading a file using el-upload, the page has to be refreshed every time before uploading again. How to clear the contents of the file in el-upload after uploading the file (regardless of success or failure)?

File element-ui vue.js
Feb.28,2021

this.$refs.upload.clearFiles ()

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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-64f5-1e80ed9-b19.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e80ed9-b19.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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