Filebeat Multiline.Pattern error parsing regexp

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1

Hello,

Can someone give me a hint why the following Regex is not working within filebeat?
^[\d{4}[\S\s]+?]]?$

Errormessage is:
2019-09-18T13:14:38.496+0200 ERROR instance/beat.go:877 Exiting: Error while initializing input: error parsing regexp: missing closing ]: [^]+?\]\]?(?-m:$) accessing 'filebeat.inputs.1.multiline.pattern' (source:'filebeat.yml')
Exiting: Error while initializing input: error parsing regexp: missing closing ]: [^]+?\]\]?(?-m:$) accessing 'filebeat.inputs.1.multiline.pattern' (source:'filebeat.yml')

In https://regex101.com/ and https://play.golang.org/ it works - but maybe I got something wrong with the supported regex dialect or engines

Thanks in advance.
BW

2

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