Error: Failed container creation: Create container from image: Failed to clone the filesystem:

alan@hal:~$  lxc export 5a01c2c8552f
Error: Create container backup: not found

I tried deleting the image…

alan@hal:~$ lxc image list
+-------+--------------+--------+---------------------------------------------+--------+----------+-------------------------------+
| ALIAS | FINGERPRINT  | PUBLIC |                 DESCRIPTION                 |  ARCH  |   SIZE   |          UPLOAD DATE          |
+-------+--------------+--------+---------------------------------------------+--------+----------+-------------------------------+
|       | 5a01c2c8552f | no     | ubuntu 16.04 LTS amd64 (release) (20190514) | x86_64 | 159.52MB | May 15, 2019 at 5:29pm (UTC)  |
+-------+--------------+--------+---------------------------------------------+--------+----------+-------------------------------+
|       | c4681ac755d9 | no     | ubuntu 18.04 LTS amd64 (release) (20190514) | x86_64 | 177.89MB | May 18, 2019 at 10:42pm (UTC) |
+-------+--------------+--------+---------------------------------------------+--------+----------+-------------------------------+
alan@hal:~$ lxc image delete 5a01c2c8552f

Then launch a new one

alan@hal:~$ lxc launch ubuntu:16.04 test1604
Creating test1604
Error: Failed container creation: Create container from image: Failed to clone the filesystem: cannot open 'default/images/5a01c2c8552f1fafe1d78e863c67e513da76d285afa6f22c4bfa93a802596af9@readonly': dataset does not exist


It downloaded and failed again…