Install aolserver4-xotcl by entering the following commands in the terminal:
sudo apt update sudo apt install aolserver4-xotcl
Description:
Extended Object Tcl (XOTcl): Object orientation for AOLServer - module
This package provides the XOTcl module for the AOLSERVER 4.0.10/4.5 webserver. This module provides and initialises the XOTcl language extension in the various AOLSERVER runtime environments (e.g., the embedded Tcl interpreters in AOLSERVER's worker threads).
Homepage: http://www.xotcl.org/
Version: 1.6.8-3
Section: universe/web