Why can’t you stop buying 618?From the technical dimension to explore>>>

Error downloading software package

Insufficient space in download directory

There is not enough space in the download directory

manually delete some unnecessary things

you can try the Yum clean all command before deleting files, which will clear the yum cache files—- Delete too little, and use Yum again will download some things, not recommended

just delete the log file manually. But the log file is small after all