The el-select selector in vue2.0 element-ui cannot display the selected content

before triggering the search event, everything is normal
after the drop-down selection, click the search button, other drop-down box selectors can not be selected normally, can trigger the change event, but it is not displayed on the page, click on more options, not shown before, it shows
Note: it is not the version grade problem of vue and element, both are the latest version

Is there any corresponding data in

data?

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-64f5-1b30613-2bd02.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b30613-2bd02.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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