After running logstash to send emails , one of the messages has been blocked. So the logstash shows me this error
[2017-08-30T09:29:35,862][ERROR][logstash.shutdownwatcher ] The shutdown process appears to be stalled due to busy or blocked plugins. Check the logs for more information and i can't send emails anymore .
Any help please
Message blocked
This error message is just a symptom of the real error which is logged separately.
sorry but what shall i do ?
Look in the log for other error messages.
Please copy/paste instead of posting a screenshot.
The email output has logged an error a couple of times. Have you verified that the computer Logstash runs on can connect to whatever server you've configured?
The problem has been solved, thank you 
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