Opensearch change the owner of snapshots file

Excuse me, when I try to create a _snapshots index for my cluster using the flowing code:
PUT /_snapshot/backup_name
{
“type”: “fs”,
“settings”: {
“location”: “location_file”,
“compress”: true
}
}
I failed and I find the owner of location_file has been changed to “hex”, it is strange and I don’t know how to deal with it.

Not related to Cross-Cluster Replication