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use strict;
use warnings;
...
    }
    return \@info_nodes;
  }

$VAR1 = [
          'first',
          'second',
          'third'
        ];

sub _go_through {
    no strict 'refs';
...

    return \@info_nodes;
}

Can't use string ("p1") as a HASH ref while "strict refs" in use at ..
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