Pushover not working anymore

Hi

I’m already on OH2 and pushover worked for me without any issues. Now 1 or 2 weeks ago the service stopped working with following error-message in Log:

The name ‘pushover()’ cannot be resolved to an item or type

Rule:

rule “Alarm and Pushover”
when
Item Doors changed to OPEN or
Item Windows changed to OPEN
then
if (AtHome.state == OFF && Door_Sued.state == “OPEN”) {
pushover (“Security Alarm, Türe Terrasse Offen!!”)
} else if (AtHome.state == OFF && Door_West.state == “OPEN”) {
pushover (“Security Alarm, Türe Esstisch Offen!!”)
} else if (AtHome.state == OFF && Door_Keller.state == “OPEN”) {
pushover (“Security Alarm, Türe Kellerabgang Offen!!”)
} else if (AtHome.state == OFF && Windows.state == “OPEN”) {
pushover (“Security Alarm, Fenster offen!!”)
}
end

Any ideas? I didn¨t change anything except updated nightly builds

Michael