Openstack api ERROR 400 suddendly

Hi,

I'm using openstack api via openrc config file and openstack cli command to backup and to transfer backups to aws s3 bucket.
All doing well until yesterday. The backup started and finished on OVH but I couldn't save the image file via the command:

```
openstack image save --file /backup/vms/2021-09-10T23:30:28Z_***-int-001 2021-09-10T23:30:28Z***-int-001

BadRequestException: 400: Client Error for url: https://image.compute.gra7.cloud.ovh.net/v2/images?name=2021-09-10T23%3A30%3A28Z_***-int-001, Bad Request.
```
It worked two days ago so I don't understand what is the problem. I do this backup through an ansible playbook (shell command).
I checked the command with openstack cli, it worked without fail.

Don't really know what happen, OVH openstack has breaking changes ?

I'll post a ticket to the support.

If you have any idea, or question, feel free !

Best regards

Thanks