Problem with Multiline pattern in Filebeat

I think there is a problem with the pattern. Try using:

multiline.pattern: '^[0-9]{2} \b\w+\b [0-9]{4} [0-9]{2}:[0-9]{2}:[0-9]{2},[0-9]{3}'

I tested it here https://play.golang.org/p/WoDQUH6jfA