Change single quotes to Double in this line, and it works: 
my ($hashref) = Load(<<"...");

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From "<<EOF" (here-doc) in perlop:

Double quotes indicate that the text will be interpolated using exactly the same rules as normal double quoted strings.

        “The sources of quotes found on the internet are not always reliable.” — Abraham Lincoln.3; cf.

In reply to Re: Environment Variables in YAML by NetWallah
in thread Environment Variables in YAML by quietgecko

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