That depends on what the problems are. Most of the monks here haven't yet invested the thousands of hours of meditation necessary to become psychic diagnosticians of Perl problems.

The text of the error message might help.

package Cow { use Moo; has name => (is => 'lazy', default => sub { 'Mooington' }) } say Cow->new->name

In reply to Re: Backward compatibility of code problem by tobyink
in thread Backward compatibility of code problem by Doctrin

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