GPG Key Fetch Error

Reached ho to create a an image of Volumio on a Raspberry pi 3 using armv8. Found volumio3-os Builder
Followed all the process on the README.md using the command ./build.sh -b armv8 -d pi and got this print:

[ … ] Running Volumio Image Builder -
[ … ] Checking whether we are running as root
[ … ] Creating log directory
[ … ] Setting default Volumio variant
[ … ] Creating armv8 rootfs
[ … ] armv8 rootfs exists, cleaning it
[ … ] Setting up Multistrap environment
[ … ] Preparing rootfs apt-config
[ … ] Adding SecureApt keys to rootfs
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
Executing: /tmp/apt-key-gpghome.69dfbzd6m5/gpg.1.sh --fetch-keys https:\repo,volumio,org\Volumio2\archive-key-10,asc
gpg: requesting key from ‘https:\repo,volumio,org\Volumio2\archive-key-10,asc’
gpg: key DC30D7C23CBBABEE: public key “Debian Archive Automatic Signing Key (10/buster) ftpmaster@debian.org” imported
gpg: Total number processed: 1
gpg: imported: 1
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
Executing: /tmp/apt-key-gpghome.CpDFGAAYCD/gpg.1.sh --fetch-keys https:\deb,nodesource,com\gpgkey\nodesource,gpg,key
gpg: requesting key from ‘https:\deb,nodesource,com\gpgkey\nodesource,gpg,key’
gpg: key 1655A0AB68576280: public key “NodeSource <gpg@nodesource,com>” imported
gpg: Total number processed: 1
gpg: imported: 1
Warning: apt-key is deprecated, Manage keyring files in trusted,gpg,d instead (see apt-key(8)),
Executing: /tmp/apt-key-gpghome,HDNzWYn3o4/gpg,1,sh --fetch-keys http:\archive,raspberrypi,org\debian\raspberrypi,gpg,key
gpg: requesting key from ‘http:\archive,raspberrypi,org\debian\raspberrypi,gpg,key’
gpg: key 82B129927FA3303E: public key “Raspberry Pi Archive Signing Key” imported
gpg: Total number processed: 1
gpg: imported: 1
Warning: apt-key is deprecated, Manage keyring files in trusted,gpg,d instead (see apt-key(8)),
Executing: /tmp/apt-key-gpghome,MSzBH6yvvq/gpg,1,sh --fetch-keys https:\www,lesbonscomptes,com\pages\jf-at-dockes,org,pub
gpg: requesting key from ‘https:\www,lesbonscomptes,com\pages\jf-at-dockes,org,pub’
gpg: WARNING: unable to fetch URI https:\www,lesbonscomptes,com\pages\jf-at-dockes,org,pub: No data
gpg: key fetch failed: No data

(By the way I replaced on the links the dots for commas and the / for this \ one. To avoid not being able to post.)

I don’t know if I missing something.

Best Regards, Thanks in Advance.

armv8 is not supported

So this text in README.md is wrong?

where flags are :

* -b `<arch>` Build a base rootfs with Multistrap.Options for the target architecture are:
**arm** (Raspbian armhf 32bit), **armv7** (Debian armhf 32bit), **armv8** (Debian arm64 64bit)
**x86** (Debian i386 32bit) or **x64** (Debian amd64 64bit).

Thank you for you answer!

yes it’s old, it must be updated

you can build with arm, armv7 and x64

Thank you!