Problems when installing the jibri

hello good day I have a problem with the installation of the Jibri unit.
I follow the step of the video and in the part of executing the command:
apt-get install linux-image-extra-virtual

Throw me. this:
apt-get install linux-image-extra-virtual

Reading package lists … Done
Building dependence tree
Reading state information … Done
E: Unable to locate package linux-image-extra-virtual

I would like to record my lectures