On Thursday, 30 June 2022 19:15:33 BST Guillermo wrote:
> Hello,
> 
> I still have the same problem, but the command worked fine.

The command "emerge -a --depclean" will only remove uninstall the kernel 
packages, but will not remove files from /usr/src/, or old kernel images and 
files from /boot/.

Your /boot partition is full with old kernels you probably no longer use or 
need.  You have to remove them manually as part of your regular maintenance of 
your installation, or you can install and use 'app-admin/eclean-kernel' as 
mentioned in the previous thread, to partly automate the cleanup process of 
stale kernels.  Then update your GRUB to refresh the boot menu.