This message is displayed when:
"The BIG-IP system receives a RST acknowledgement (ACK) in response to terminating a service check."
REF - https://support.f5.com/csp/article/K13223
Have you checked that your self-ip is allowing that communication?
REF - https://support.f5.com/csp/article/K17333
I recommend you to follow this guidelines:
I ran into this issue as well. I was running multi nic with this configuration:
sys db provision.1nic value forced_enable
set this to disabled.
setdb provision.1nic disable
This is a BUG.