Problems of Notification components in element-ui Framework

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as shown in the figure, I called Notification when I called the backend interface and set duration to 0 that will not shut down automatically. When I get result, I need to manually close the Notification component. Ask how to write

Mar.22,2021

calling Notification or this.$notify returns an instance of the current Notification. If you need to shut down the instance manually, you can call its close method. Notification
the document makes it clear

  

Please read the document carefully

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-64f5-1e49128-44cf7.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e49128-44cf7.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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