You can switch off or amend autovivification behaviour using this pragma module - https://metacpan.org/pod/autovivification https://metacpan.org/pod/autovivific

You can switch off or amend autovivification behaviour using this pragma module - https://metacpan.org/pod/autovivification https://metacpan.org/pod/autovivification no autovivification; # switches off autoviv except for setting no autovivification 'exists'; # just for exists checks