Container creation failed (LXD)

Hey,

I tried to create a container via the LXD API.
The API lets me know, the request has been accepted but then it vanishes, without any error.

Nothing in the logs.

My request: https://pastebin.com/20J5aiY1
I took the example from here:
https://github.com/lxc/lxd/blob/master/doc/rest-api.md#10instances
https://linuxcontainers.org/lxd/docs/master/instances

The response:
https://pastebin.com/RSYwFt8E

The storage pool exists:

Anyone got an idea, why it fails? or how to debug it?

Thanks.

Fixed it: https://ugle-z.no/articles/2018-08/LXD-no-root-device.html