Steps to reproduce:
- Create a dummy Zabbix Trapper item
- Create a dummy trigger to trigger on last value > 5
- Create a dummy Action to perform anything like echo 123 > /tmp/dummy.log with an option to execute on Zabbix Server
- Fire up the trigger
Unnecessary colon is being placed before the command. please check the image attached
Either Zabbix Server either the command without a colon.