[Bug]: upload index files failed when set the rootPath is `.` for minio

[xiaocai2333]

Is there an existing issue for this?

• I have searched the existing issues

Environment

- Milvus version:
- Deployment mode(standalone or cluster):
- MQ type(rocksmq, pulsar or kafka):    
- SDK version(e.g. pymilvus v2.0.0rc2):
- OS(Ubuntu or CentOS): 
- CPU/Memory: 
- GPU: 
- Others:

Current Behavior

upload index files failed when set the rootPath is . for minio

Expected Behavior

upload index files success

Steps To Reproduce

Milvus Log

No response

Anything else?

No response