On the LP Series controllers the Diagnostic page has a button that can be used to download the syslog from the controller. The syslog is a system log that is captured within the operating system and can be useful in troubleshooting issues when working with HID support staff.
The syslog file that is downloaded is encrypted and would need to be sent to the HID support team that manages the Mercury solution. They have tools to extract the information contained inside the logs.
Note that the syslog is erased each time the board boots up, so it will not contain historical information if the issue happened in the past and the board has since been rebooted.
The Syslog should only be captured and submitted when requested by HID support.