Prometheus server permission issue

Hello, I am trying to deploy lokistack in onprem cluster. We are getting permission denied issue for the Prometheus pod in the logs.
log message →component=activeQueryTracker msg=“Error opening query log file” file=/data/ err=“open /data/ permission denied”
2024-03-05T07:50:25.898669738Z panic: Unable to create mmap-ed active query log
The same helm chart is working fine other clusters. What might be the issue? How to fix this?