https://learn.microsoft.com/en-us/troubleshoot/microsoft-365/purview/ediscovery/resolve-ediscovery-issues
Resolve Search Errors in eDiscovery (Standard) - Microsoft 365 | Microsoft Learn
Resolve common search errors in Microsoft Purview eDiscovery (Standard).
search errorsresolveediscoverystandardmicrosoft
https://manpages.ubuntu.com/manpages/xenial/man3/Search::Xapian::RuntimeError.3pm.html
Ubuntu Manpage: Search::Xapian::RuntimeError - The base class for exceptions indicating errors only...
The base class for exceptions indicating errors only detectable at runtime.