RUNSCRIPT_WAITPID_FAILED

[Spinaker70]

Got error in log:
2021-07-23 12:53:53.685 ERROR [kea-dhcp4.hook-runscript/56362.0x801adb000] RUNSCRIPT_WAITPID_FAILED waitpid() failed with error: Interrupted system call

"library": "/usr/local/lib/kea/hooks/kea-hook-runscript.so",
"parameters": {
"script": "/usr/local/etc/kea/dhcpv4.pl",
"wait": true
}

FreeBSD srv2 12.2-RELEASE-p4 FreeBSD 12.2-RELEASE-p4 GENERIC amd64
kea-1.8.2_1

How to solve this?