Trash directory is at:

/home/$USER/.local/share/Trash

If you delete something as root it is at:

/root/.local/share/Trash

The Trash directory is first created when a user deletes a file. Within Trash there are three subdirectories:

files – where deleted files are stored until the trash is emptied

info – stores information on where the files once were and when they were deleted

expunged – where files are briefly moved to when the trash is emptied (but may contain some owned by other users from directories you deleted).

Clear the rubbish bin from the command line

Normal user account

rm -rf ~/.local/share/Trash/files

Root user

sudo rm -rf /root/.local/share/Trash/files