As stated in the title, once adding the FIM integration to my Ubuntu 22.04 server. The fleet agent turned "Unhealthy", and shows "input not supported". Once I remove the FIM integration, then everything works just fine and agent turned back to "Healthy" state.
[elastic_agent][info] Unit state changed audit/file_integrity-default (FAILED->STOPPED): input not supported
OS version: Ubuntu 22.04.3
Elastic Agent version: 8.8.2
FIM integration version: 1.8.0