No event collected from Sysmon

I have installed sysmon in a Windows machine using the command:

==> sysmon.exe -i -accepteula -h md5,sha256,imphash -l -n

And then restart winlogbeat. In winlogbeat log everything is working well, and i have logs like that:

020-11-26T14:45:30.485+0100	INFO	beater/eventlogger.go:88	EventLog[Microsoft-Windows-Sysmon/Operational] successfully published 1 events

but when I go to kibana I am not seeing any sysmon logs

Can you tell me what's the problem please ?

Thanks for your help