IO spurt Cro http request response to file

gistfile1.txt

# Import the client class.
use Cro::HTTP::Client;

my $client = Cro::HTTP::Client.new(
    headers => [
        User-agent => 'Cro'
    ]);

# Make the request
####
my $url = 'https://www.perl6.org/';

my $resp = await $client.get($url);

my $body = await $resp.body;

"perl6_header.txt".IO.spurt: $resp;
"perl6_body.txt".IO.spurt: $body;

# Result
####
# "perl6_header.txt" file made, but has 0 bytes 
# "perl6_body.txt" file not made, instead :

# Cannot resolve caller spurt(IO::Handle: Cro::HTTP::Response, :close); none of these signatures match:
#     (IO::Handle:D $: Blob $data, :$close, *%_)
#     (IO::Handle:D $: Cool $data, :$close, *%_)
#   in block <unit> at perl6_cro_simple_http_request.p6 line 29