GROK pattern and Debugger

Hi there!
Could not find a problem and supported index
I have pattern which pass test in Grok Debugger but shows "The input is not valid." in Processor field while Create pipeline
Grok pattern:

^%{TIMESTAMP_ISO8601:timestamp}\s+((?:NOT AVAILABLE)|%{IPORHOST:remote_address})\s+%{POSINT:thread}\s+%{LOGLEVEL:loglevel}\s+(?<logger>\S+)%{GREEDYDATA:message}\s+

two log records:

2020-07-27 00:01:54 NOT AVAILABLE 8   INFO  Quartz.Listener.JobChainingJobListener Job 'ProcessGroup.sendNotificationsJobKey' will now chain to Job 'ProcessGroup.makeEscalationNotificationsJobKey'
2020-07-27 00:02:04 26  INFO  Farin.Infrastructure.System.Host.Core.Log.RequestLogMiddleware >> HttpRequest:; Method: GET

I see \s+ doesn't like by Processor.
Any ideas?

Exactly what error message do you get from logstash.

Also, do you really want a trailing \s+ on the pattern?

Due some playing tries I've got working pattern:

"^%{TIMESTAMP_ISO8601:timestamp}%{SPACE}*((?:NOT AVAILABLE)|%{IPORHOST:remote_address})%{SPACE}*%{POSINT:thread}%{SPACE}*%{LOGLEVEL:loglevel}%{SPACE}*(?<logger>%{NOTSPACE}*)%{GREEDYMULTILINE:message}"

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