Why do I delete the hexo package automatically when I install the plug-in after I have successfully installed hexo?

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about hexo, I tried many times but couldn"t solve it.
I installed hexo, step by step according to the instructions on the Internet, but I was unable to submit it to github, for checking. It was due to the lack of hexo-deploy-git plug-in, but after I installed this plug-in, I automatically deleted all the original hexo packages, resulting in not working properly. Please give me some advice

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Feb.26,2021
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-64f5-1b308d5-2bd1e.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b308d5-2bd1e.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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