redis_backup.sh errors on redis cluster VM

I see these log messages in syslog on one of our redis servers

redis-cluster-shared-state-shard-01-03-db-gprd.c.gitlab-production.internal

May 19 14:34:25 redis-cluster-shared-state-shard-01-03-db-gprd redis_backup.sh[635830]: 2025-05-19 14:34:25 UTC  [635830]  ERROR Could not find redis credentials.
May 19 14:35:25 redis-cluster-shared-state-shard-01-03-db-gprd redis_backup.sh[636667]: 2025-05-19 14:35:25 UTC  [636659]  ERROR Could not find redis credentials.
May 19 14:35:25 redis-cluster-shared-state-shard-01-03-db-gprd redis_backup.sh[636677]: 2025-05-19 14:35:25 UTC  [636659]  ERROR Could not find redis credentials.
May 19 14:35:25 redis-cluster-shared-state-shard-01-03-db-gprd redis_backup.sh[636659]: 2025-05-19 14:35:25 UTC  [636659]  LOG Could not determine age of last successful backup.  Assuming it is old enough to replace.
May 19 14:35:25 redis-cluster-shared-state-shard-01-03-db-gprd redis_backup.sh[636659]: 2025-05-19 14:35:25 UTC  [636659]  LOG Starting a backup to run asynchronously.
May 19 14:35:25 redis-cluster-shared-state-shard-01-03-db-gprd redis_backup.sh[636659]: 2025-05-19 14:35:25 UTC  [636659]  ERROR Could not find redis credentials.

Probably harmless, but we should clean it up.