This is a discussion on Epson V19 Flatbed Scanner within the Linux Support forums, part of the Tech Support Forum category. When I use my Epson V19 Flatbed Scanner, with my Linux OS (Ubuntu Mate 16.04) I can only use it
So a couple of things right off the bat. Your still using 16.04. According the the Ubuntu end of life (EOL) documentation. There hasn't been support for that version of the OS since April 2019. I would recommend backing up your data, then updateing to either 18.04.4 LTS or the most recent release which is 20.04 LTS.
The other issue is that Epson doesn't support Linux with drivers natively. There might be some second or third hand drivers out there.