Install libplack-middleware-debug-perl by entering the following commands in the terminal:
sudo apt update sudo apt install libplack-middleware-debug-perl
Description:
Plack middleware for displaying request/response debug information
Plack::Middleware::Debug offers a configurable set of panels that display information about the current request and response, thus aiding in debugging. It is heavily influenced by the Django Debug Toolbar.
Homepage: https://metacpan.org/release/Plack-Middleware-Debug
Version: 0.16+dfsg-1
Section: universe/perl