Installation problems with echarts version

when installing the two versions of v4.2.0.rc1 npm install echarts@4.2.0.rc2 v4.2.0.rc2 in the vue project, I was prompted that I could not find a matching version to install the
rc1-- save method. I don"t know why. Please answer!

Apr.14,2022

version number is wrong. Install npm install echarts@4.2.0-rc.2-- save

like this
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-64f5-1e5a95c-44539.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e5a95c-44539.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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