Velero BackupStorageLocation unavailable

[prometheus-tao]

What steps did you take and what happened:
[A clear and concise description of what the bug is.]
velero backupstoragelocation error:

BackupStorageLocation "default" is unavailable: rpc error: code = Unknown
desc = error loading environment from ALIBABA_CLOUD_CREDENTIALS_FILE (/credentials/cloud):
Can''t separate key from value

secret file

[default]
alibaba_cloud_access_key_id = xxx
alibaba_cloud_access_key_secret = xxxx

What did you expect to happen:
The backupstoragelocation status is Available

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

Environment:

• Velero version: (use ark version): v1.13.0 velero-plugin-alibabacloud:v1.0.0-2d33b89
• Kubernetes version: (use kubectl version): v1.18.20
• Kubernetes installer & version:
• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):