Install cl-acl-compat by entering the following commands in the terminal:
sudo apt update sudo apt install cl-acl-compat
Description:
Compatibility layer for Allegro Common Lisp
A thin compatibility-layer that emulates library functions provided by Allegro Common Lisp. It is used to support a number of Franz's open-source packages which depend upon such library functions.
Homepage: http://portableaserve.sourceforge.net/
Version: 1.2.42+cvs.2010.02.08-dfsg-1.2
Section: universe/web