Wow.. Sorry about that.

that worked for the download, but failed on the save.

Can't locate object method "save_to" via package "Mojo::Message::Response" at testdown1.pl line 27.

cpan> install Mojo::Message::Response Mojo::Message::Response is up to date (undef).

Your CPAN repo doesn't seem up to date https://metacpan.org/dist/Mojolicious/changes#L567:

8.02  2018-10-01
...
- Added save_to method to Mojo::Message.
[download]

previously.

ok, this is weird.

C:\SCRIPTS>cpanm install install Mojo::Message::Response
--> Working on install
Fetching http://www.cpan.org/authors/id/D/DA/DAGOLDEN/install-0.01.tar
+.gz ... OK
Configuring install-0.01 ... OK
Building and testing install-0.01 ... OK
Successfully installed install-0.01
Mojo::Message::Response is up to date. (undef)
1 distribution installed

C:\SCRIPTS>cpanm install install Mojo::Message
install is up to date. (0.01)
Mojo::Message is up to date. (undef)

C:\SCRIPTS>cpanm install install Mojo::UserAgent
install is up to date. (0.01)
Mojo::UserAgent is up to date. (undef)

C:\SCRIPTS>cpanm --mirror install Mojo::Message::Response
Mojo::Message::Response is up to date. (undef)
[download]