"error getting backup volume info: request failed" in succesful backups

[svvsigstr]

I am testing velero v1.15.2 with velero-plugin-for-aws v1.11.1. Kubernetes v1.28.7.
Backups are reported as Completed with 0 errors and 0 warnings and restores seem to be working fine.
velero backup describe however contains this:

Backup Volumes:
  <error getting backup volume info: request failed: <?xml version="1.0" encoding="UTF-8"?>
<Error><Code>AccessDenied</Code><Message>Access Denied</Message>
<Resource>...path.../...schedule...-...timestamp...-volumeinfo.json.gz</Resource>
<RequestId>...</RequestId></Error>
>

Searching led me to this issue, but since op had a failed status, whereas I get completed, I believe that this message is not related to the status error.
In upgrading I also have had to set checksumAlgorithm: "" in the backupStorageLocation (discussed here).

I am not sure what this means, if it should be reported as a bug or if this is expected behaviour.

Also, the contents of volumeinfo.json.gz is just "[]".