When using the Event generator, I can generate syslog events but if I try simulating a SNMP event I get HTTP 500 error. From Apache’s error_log:
[Wed Jul 27 15:09:28.489045 2022] [wsgi:error] [pid 16113] [client 127.0.0.1:43954] AttributeError: 'SyslogMessage' object has no attribute '_priority', referer: http://vm-admin/home/check_mk/wato.py?mode=mkeventd_rules&rule_pack=default