I get the output "No time difference" from the CPU utilization parameter

CMK version:2.2.0
OS version: Ubuntu LTS 22.4

Error message: CPU utilization No time difference

I have already customized the NTP servers. I had the case that I replaced the Checkmk Agent 2.2 with a 1.6 Legacy Agent and I got the CPU parameter including utilization output on the CheckMK host for 2-3 minutes until “No time difference” was output again