make service unreachable

from zabbix_server.log:
2171985:20200911:124951.646 item “MON:web[443,telewerken.xxxx.nl]” became not supported: Canno
t perform request: Operation timed out after 3001 milliseconds with 0 bytes received
2171985:20200911:124952.682 item “MON:web[443,werkplekacc.xxxx.nl]” became not supported: Cann
ot perform request: Operation timed out after 3001 milliseconds with 0 out of 0 bytes received

The httpitem has custom error handling defined in the preprocessing but this was not activated