tentei instalar o virtual box no ubuntu e agora não consigo fazer muitas coisas no meu terminal

Question

E: Conflicting values set for option Signed-By regarding source https://download.virtualbox.org/virtualbox/debian/ focal: /usr/share/keyrings/oracle-virtualbox-2016.gpg != 
E: The list of sources could not be read.
E: Conflicting values set for option Signed-By regarding source https://download.virtualbox.org/virtualbox/debian/ focal: /usr/share/keyrings/oracle-virtualbox-2016.gpg != 
E: The list of sources could not be read.