That means that $self->{'netstat_array'} is sometimes undef. The first questions I'd ask myself are: why is it undef, and is undef a valid value for that variable? A quick workaround might be to write @{ $self->{'netstat_array'} // [] }, but that won't solve the root of the issue. For more help please read and follow How do I post a question effectively?

In reply to Re: Perl array reference error by Anonymous Monk
in thread Perl array reference error by user786

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