sergiusens@mirkwood:~$ snap try squashfs-root/ error: cannot try /home/sergiusens/squashfs-root: snap is unusable due to missing files; contact developer sergiusens@mirkwood:~$ cat squashfs-root/meta/snap.yaml
name: java-hello-world version: "1.0" summary: A java example description: this is not much more than an example architectures: - amd64 confinement: strict grade: stable apps: hello: command: echo hello
sergiusens@mirkwood:~$ find squashfs-root/ squashfs-root/ squashfs-root/meta squashfs-root/meta/snap.yaml
Aside from the actual error, the error message is really too vague to be useful.
I saw this while running off of beta, I have since switched back to
stable and things are working again.