# Troubleshooting

- [Platform Diagnostics Tools](/manual/implementation/troubleshooting/platform-diagnostics-tools.md): Starting with version 2025.11, two new diagnostic scripts are available to help identify issues and assist the support team.
- [Unexpected Agent Termination](/manual/implementation/troubleshooting/unexpected-agent-termination.md): In some cases, the Agent may stop running without any visible error or warning.
- [Error message: “502 Bad Gateway”](/manual/implementation/troubleshooting/error-message-502-bad-gateway.md)
- [The UI is not displaying any metrics for my new instance.](/manual/implementation/troubleshooting/the-ui-is-not-displaying-any-metrics-for-my-new-instance..md)
- [UI dashboard is encountering loading errors](/manual/implementation/troubleshooting/ui-dashboard-is-encountering-loading-errors.md)
- [InfluxDB](/manual/implementation/troubleshooting/influxdb.md): InfluxDB is an open-source time series database used by Datasentinel to store collected metrics and manage data retention.
- [SELinux](/manual/implementation/troubleshooting/selinux.md): Security-Enhanced Linux (SELinux) is a Linux kernel security module that provides a mechanism for supporting access control security policies, including mandatory access controls (MAC).