It works on my system

Initial upload

.gitignore

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+
+.DS_Store

config/sigma-dns.properties

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+application.id=zeek-rules-streams-app
+bootstrap.server=broker:29092
+schema.registry=http://schema-registry:8081
+data.topic=dns
+output.topic=dns-detection
+field.mapping.file=/tmp/config/splunk-zeek.yml
+sigma.rules.topic=sigma-rules
+sigma.rule.filter.product=zeek
+sigma.rule.filter.service=dns
+#sigma.rule.filter.title=Domain User Enumeration Network Recon 01
+#sigma.rule.filter.list=/Users/mpeacock/Development/KafkaSigma/kafka-sigma-streams/src/config/sigma_titles.txt

config/sigma-http.properties

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+application.id=operation-rules-streams-app
+bootstrap.server=127.0.0.1:9092
+data.topic=http
+output.topic=http-detection
+field.mapping.file=config/splunk-zeek.yml
+sigma.rules.topic=sigma-rules
+sigma.rule.filter.product=zeek
+sigma.rule.filter.service=http
+sigma.rule.filter.title=Simple Http
+#sigma.rule.filter.list=config/sigma_titles.txt

config/sigma_titles.txt

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+Possible Windows Executable Download Without Matching Mime Type
+Executable from Webdav
+Possible Data Collection related to Office Docs and Email Archives and PDFs
+Domain User Enumeration Network Recon 01