Install djvuserve by entering the following commands in the terminal:
sudo apt update sudo apt install djvuserve
Description:
CGI program for unbundling DjVu files on the fly
CGI program to convert a bundled multi-page DjVu document into an indirect DjVu document on the fly. This provides for efficiently browsing large DjVu documents without transferring unnecessary pages.
Homepage: http://djvu.sourceforge.net/
Version: 3.5.27.1-8
Section: universe/web