How are you acquiring Logstash? Are you building from source, or did you download a package? If so, which package (and, did you use a package manager like dpkg, apt, or yum)?
does the error indicate in any way that it is coming from a plugin (e.g., an input, output, or filter) that you are using, and if so, have you made any recent changes to your pipeline configuration to invoke new plugins? You may need to pass the --log.level=debug flag when starting Logstash to get it to give you backtraces.
If the error is coming from a plugin, knowing which version of the plugin will help us replicate:
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