If I try to destroy an LXC container I get this Error:
lxc-destroy: assistant: storage/btrfs.c: get_btrfs_subvol_path: 118 Failed to append name - @�
lxc-destroy: assistant: storage/btrfs.c: get_btrfs_subvol_path: 103 Failed to append name - 12c01ca429523a16e36723d44ba4932acdbb93632713eb48e222b7842d2c01e7�
lxc-destroy: assistant: storage/btrfs.c: get_btrfs_subvol_path: 103 Failed to append name - 343cb7d878328cfdd03fe54191f33af5b3d2619bcb547f524cdd802826136e15�
lxc-destroy: assistant: storage/btrfs.c: get_btrfs_subvol_path: 103 Failed to append name - 3f091ba0923ec1d4960f21c6a648c24acd6d58e423c61c989987827292dbd317�
lxc-destroy: assistant: storage/btrfs.c: get_btrfs_subvol_path: 103 Failed to append name - 5fc4ce579c4c994c18e44f7257187b6b23a36fdd7d505cedea0cbe2552906536�
lxc-destroy: assistant: storage/btrfs.c: get_btrfs_subvol_path: 103 Failed to append name - a84f2628f3c2a8785327ea2fb2640c7c26cb4ac6a7efe826c3c725ae0f68f66e�
lxc-destroy: assistant: storage/btrfs.c: get_btrfs_subvol_path: 103 Failed to append name - 90157b675f1093f0a436466bf64d5718b66b022ed252fa80508472662743bbfc�
lxc-destroy: assistant: storage/btrfs.c: get_btrfs_subvol_path: 103 Failed to append name - a2cfc28c627f0983204320eaebc342e858b5584d837fb22d8674a5e0d1d00eb1�
lxc-destroy: assistant: storage/btrfs.c: get_btrfs_subvol_path: 103 Failed to append name - 5a3c0c3cd9142b6b8b92884cca41c95ffb90ad84948e45e17a696d1c04875ccf�
lxc-destroy: assistant: storage/btrfs.c: get_btrfs_subvol_path: 103 Failed to append name - 7f9f9fc3e9ff13083722abff8900a509b2946b3ccc7ad6fa8af3291ee3600729�
lxc-destroy: assistant: storage/btrfs.c: get_btrfs_subvol_path: 103 Failed to append name - 8cfab0804907023b81f948b64e8745ee0f1505c8dcb23577d8ca4fc4059cec1e�
lxc-destroy: assistant: storage/btrfs.c: get_btrfs_subvol_path: 103 Failed to append name - c898821a9c63dc173027ffc6581625cee03c01f35a24d1f292b803d32ef4591e-init�
lxc-destroy: assistant: storage/btrfs.c: get_btrfs_subvol_path: 103 Failed to append name - c898821a9c63dc173027ffc6581625cee03c01f35a24d1f292b803d32ef4591e�
lxc-destroy: assistant: lxccontainer.c: container_destroy: 2974 Error destroying rootfs for assistant
lxc-destroy: assistant: tools/lxc_destroy.c: do_destroy: 129 Destroying assistant failed
What does that mean?