Fastnetmon on openBSD Can't pass data to stdin of program /usr/local/bin/notify_about_attack.sh

Folks,

Just wondering if any of you are having issues with fastnetmon
notification scripts

in my /var/log/fastnetmon/fastnetmon.log Im getting
[ERROR] Can't pass data to stdin of program
/usr/local/bin/notify_about_attack.sh [IPAddress] incoming 122936 ban

has anyone come across this issue. ?

Im running OpenBSD 7.4 Stable on amd 64

I have upgraded to OpenBSD 7.5 snapshot and updated the Fastnetmon package

Thanks

Tom Smyth