You did not install XML::Twig properly, see A Guide To Installing Modules

$ cat Snafu.pm
package Snacks;
1;


$ perl -e " use Snafu; Snafu->new "
Can't locate object method "new" via package "Snafu" (perhaps you forg
+ot to load "Snafu"?) at -e line 1.
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