We’ve received a notification about available space on your hard drive dropping below 10%. You may begin to notice an impact on performance.
Could you clear some space for us; the common culprits are lots of files in the Trash and Downloads folders, so clearing them is always a good start. Also, make sure you've done all available software updates as they use up space until you do them.
If you have a server or centralised file storage it’s best to ensure that relevant files are stored there too.