Install libqdbm-perl by entering the following commands in the terminal:
sudo apt update sudo apt install libqdbm-perl
QDBM Database Libraries for Perl
QDBM is an embeded database library compatible with GDBM and NDBM. It features hash database and B+ tree database and is developed referring to GDBM for the purpose of the following three points: higher processing speed, smaller size of a database file, and simpler API. This package provides the Perl interface for the QDBM database library.