Install emacs25-lucid-dbg by entering the following commands in the terminal:
sudo apt update sudo apt install emacs25-lucid-dbg
Description:
Debugging symbols for emacs25-lucid
GNU Emacs is the extensible self-documenting text editor. This package contains the debugging symbols for the emacs25-lucid package.
Homepage: http://www.gnu.org/software/emacs/
Version: 25.2+1-6
Section: debug