logstash8.8.1
JSON parse error, original data now in message field {:message=>"Could not set field 'original' on object '' to value '{"event": ""}'.This is probably due to trying to set a field like [foo][bar] = someValuewhen [foo] is not either a map or a string", :exception=>Java::OrgLogstash::Accessors::InvalidFieldSetException, :data=>"{"event": ""}"}
if source is {"event":{}} ,it's ok. can I use the 'event' as string ?