Re^3: Why am I getting Can't use string (<string value>) as an ARRAY ref wile "strict refs" in use

Lines 50 and 51 are:

                $metrics{$product}{$date} = $day;
                $metrics{$product}{$date}{$hour}{$user} = $val;
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So, on line 50 you set $metrics{$product}{$date} to be a scalar and then on line 51 you try to treat it as a hash ref. That's incompatible.

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