conjure up - canonical-kubernetes disappeared?

I'm following the instructions at The charmed distribution of kubernetesBut seems that the kubernetes spell doesn't existsysop@kvmnode1:~$ sudo snap install conjure-up --classic[sudo] password di sysop: conjure-up 2.6.7-20190521.1305 from Canonical✓ installedsysop@kvmnode1:~$ conjure-up canonical-kubernetes[error] Can't find a spell matching 'canonical-kubernetes'How can I install kubernetes using conjure-up?...Read more