csr1000v Build fails

[perdingus]

Hi, I'm trying to build an image for containerlab using:
boxen package --disk csr1000v-universalk9.17.03.04a-serial.qcow2 --vendor cisco --platform csr1000v --version 17.03.04a

But it fails with:
info 1682608555 package requested for disk 'csr1000v-universalk9.17.03.04a-serial.qcow2'
critical 1682608558 error bundling required packaging files: exit status 2
🆘 finished unsuccessfully in 3 seconds
boxen --version
version: 0.0.4

Can anyone shed some light on where I'm going wrong please?