I am trying in ocata version, I have tried without incremental still getting same error

ubuntu@slave:~$ openstack volume create pandy --size 1
+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| attachments         | []                                   |
| availability_zone   | nova                                 |
| bootable            | false                                |
| consistencygroup_id | None                                 |
| created_at          | 2018-02-05T16:39:42.323571           |
| description         | None                                 |
| encrypted           | False                                |
| id                  | 2e3ec7ca-cf4a-48d1-99fc-124891476004 |
| migration_status    | None                                 |
| multiattach         | False                                |
| name                | pandy                                |
| properties          |                                      |
| replication_status  | None                                 |
| size                | 1                                    |
| snapshot_id         | None                                 |
| source_volid        | None                                 |
| status              | creating                             |
| type                | ceph                                 |
| updated_at          | None                                 |
| user_id             | dc95d85fcd354a93b19c6a0807de63b1     |
+---------------------+--------------------------------------+
ubuntu@slave:~$ cinder list
+--------------------------------------+-----------+-------+------+-------------+----------+-------------+
| ID                                   | Status    | Name  | Size | Volume Type | Bootable | Attached to |
+--------------------------------------+-----------+-------+------+-------------+----------+-------------+
| 2e3ec7ca-cf4a-48d1-99fc-124891476004 | available | pandy | 1    | ceph        | false    |             |
+--------------------------------------+-----------+-------+------+-------------+----------+-------------+
ubuntu@slave:~$ cinder backup-create 2e3ec7ca-cf4a-48d1-99fc-124891476004
+-----------+--------------------------------------+
| Property  | Value                                |
+-----------+--------------------------------------+
| id        | d7503c9c-5fc0-4fe7-b373-972830b52e4a |
| name      | None                                 |
| volume_id | 2e3ec7ca-cf4a-48d1-99fc-124891476004 |
+-----------+--------------------------------------+
ubuntu@slave:~$ cinder backup-list
+--------------------------------------+--------------------------------------+-----------+------+------+--------------+-----------+
| ID                                   | Volume ID                            | Status    | Name | Size | Object Count | Container |
+--------------------------------------+--------------------------------------+-----------+------+------+--------------+-----------+
| d7503c9c-5fc0-4fe7-b373-972830b52e4a | 2e3ec7ca-cf4a-48d1-99fc-124891476004 | available | -    | 1    | 0            | backups   |
+--------------------------------------+--------------------------------------+-----------+------+------+--------------+-----------+
ubuntu@slave:~$ cinder backup-create --incremental --force 2e3ec7ca-cf4a-48d1-99fc-124891476004
+-----------+--------------------------------------+
| Property  | Value                                |
+-----------+--------------------------------------+
| id        | 4653f065-7e26-44d8-bbba-898bb774a648 |
| name      | None                                 |
| volume_id | 2e3ec7ca-cf4a-48d1-99fc-124891476004 |
+-----------+--------------------------------------+
ubuntu@slave:~$ cinder backup-list
+--------------------------------------+--------------------------------------+-----------+------+------+--------------+-----------+
| ID                                   | Volume ID                            | Status    | Name | Size | Object Count | Container |
+--------------------------------------+--------------------------------------+-----------+------+------+--------------+-----------+
| 4653f065-7e26-44d8-bbba-898bb774a648 | 2e3ec7ca-cf4a-48d1-99fc-124891476004 | error     | -    | 1    | 0            | backups   |
| d7503c9c-5fc0-4fe7-b373-972830b52e4a | 2e3ec7ca-cf4a-48d1-99fc-124891476004 | available | -    | 1    | 0            | backups   |
+--------------------------------------+--------------------------------------+-----------+------+------+--------------+-----------+
ubuntu@slave:~$ cinder backup-show 4653f065-7e26-44d8-bbba-898bb774a648
+-----------------------+---------------------------------------+
| Property              | Value                                 |
+-----------------------+---------------------------------------+
| availability_zone     | nova                                  |
| container             | backups                               |
| created_at            | 2018-02-05T16:41:17.000000            |
| data_timestamp        | 2018-02-05T16:41:17.000000            |
| description           | None                                  |
| fail_reason           | 'dict' object has no attribute 'name' |
| has_dependent_backups | False                                 |
| id                    | 4653f065-7e26-44d8-bbba-898bb774a648  |
| is_incremental        | True                                  |
| name                  | None                                  |
| object_count          | 0                                     |
| size                  | 1                                     |
| snapshot_id           | None                                  |
| status                | error                                 |
| updated_at            | 2018-02-05T16:41:18.000000            |
| volume_id             | 2e3ec7ca-cf4a-48d1-99fc-124891476004  |
+-----------------------+---------------------------------------+
ubuntu@slave:~$ cinder backup-create 4653f065-7e26-44d8-bbba-898bb774a648
ERROR: No volume with a name or ID of '4653f065-7e26-44d8-bbba-898bb774a648' exists.
ubuntu@slave:~$ cinder backup-create 2e3ec7ca-cf4a-48d1-99fc-124891476004
+-----------+--------------------------------------+
| Property  | Value                                |
+-----------+--------------------------------------+
| id        | b840a0f2-e390-438c-bb67-3c847b29fb4b |
| name      | None                                 |
| volume_id | 2e3ec7ca-cf4a-48d1-99fc-124891476004 |
+-----------+--------------------------------------+
ubuntu@slave:~$ cinder backup-list
+--------------------------------------+--------------------------------------+-----------+------+------+--------------+-----------+
| ID                                   | Volume ID                            | Status    | Name | Size | Object Count | Container |
+--------------------------------------+--------------------------------------+-----------+------+------+--------------+-----------+
| 4653f065-7e26-44d8-bbba-898bb774a648 | 2e3ec7ca-cf4a-48d1-99fc-124891476004 | error     | -    | 1    | 0            | backups   |
| b840a0f2-e390-438c-bb67-3c847b29fb4b | 2e3ec7ca-cf4a-48d1-99fc-124891476004 | error     | -    | 1    | 0            | backups   |
| d7503c9c-5fc0-4fe7-b373-972830b52e4a | 2e3ec7ca-cf4a-48d1-99fc-124891476004 | available | -    | 1    | 0            | backups   |
+--------------------------------------+--------------------------------------+-----------+------+------+--------------+-----------+