Install gsasl-dbg by entering the following commands in the terminal:
sudo apt update sudo apt install gsasl-dbg
Description:
GNU SASL debugging symbols
GNU SASL is an implementation of the Simple Authentication and Security Layer framework and a few common SASL mechanisms. SASL is used by network servers (e.g., IMAP, SMTP) to request authentication from clients, and in clients to authenticate against servers. . This package contains detached debugging information. Most people will not need this package. It is provided primarily to provide a backtrace with names in a debugger, this makes it somewhat easier to interpret core dumps. GDB will find this debug information automatically.
Homepage: http://www.gnu.org/software/gsasl/
Version: 1.8.0-8ubuntu3
Section: universe/debug