Unable to load the plugin RSS plugin

[heidigerken]

Logstash information:

Please include the following information:

1. Logstash version: 8.10.4
2. Logstash installation source: yum repo
3. How is Logstash being run: as a service using systemctl
4. How was the Logstash Plugin installed: as noted on the GitHub page, https://github.com/cyberimposters/rss-security#a-quick-rss-cybersecurity-news-feed

JVM (e.g. java -version): openjdk version "1.8.0_312"
OpenJDK Runtime Environment (build 1.8.0_312-b07)
OpenJDK 64-Bit Server VM (build 25.312-b07, mixed mode)

OS version (uname -a if on a Unix-like system): CentOS Stream release 8, Linux 4.18.0-358.el8.x86_64 #1 SMP Mon Jan 10 13:11:20 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

Description of the problem including expected versus actual behavior:

Steps to reproduce:
Just follow the steps on the GitHub page and you will get the error in the log section below.

Provide logs (if relevant): [2023-11-03T14:35:27,048][INFO ][logstash.agent ] Successfully started Logstash API endpoint {:port=>9600, :ssl_enabled=>false}
[2023-11-03T14:35:29,772][INFO ][org.reflections.Reflections] Reflections took 169 ms to scan 1 urls, producing 132 keys and 464 values
[2023-11-03T14:35:29,826][ERROR][logstash.plugins.registry] Unable to load plugin. {:type=>"input", :name=>"rss"}
[2023-11-03T14:35:29,836][ERROR][logstash.agent ] Failed to execute action {:action=>LogStash::PipelineAction::Create/pipeline_id:rss-feed, :exception=>"Java::JavaLang::IllegalStateException", :message=>"Unable to configure plugins: (PluginLoadingError) Couldn't find any input plugin named 'rss'. Are you sure this is correct? Trying to load the rss input plugin resulted in this error: Unable to load the requested plugin named rss of type input. The plugin is not installed.", :backtrace=>["org.logstash.config.ir.CompiledPipeline.(CompiledPipeline.java:120)", "org.logstash.execution.AbstractPipelineExt.initialize(AbstractPipelineExt.java:186)", "org.logstash.execution.AbstractPipelineExt$INVOKER$i$initialize.call(AbstractPipelineExt$INVOKER$i$initialize.gen)", "org.jruby.internal.runtime.methods.JavaMethod$JavaMethodN.call(JavaMethod.java:847)", "org.jruby.ir.runtime.IRRuntimeHelpers.instanceSuper(IRRuntimeHelpers.java:1318)", "org.jruby.ir.instructions.InstanceSuperInstr.interpret(InstanceSuperInstr.java:139)", "org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:367)", "org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:66)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:128)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:115)", "org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:452)", "org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:92)", "org.jruby.RubyClass.newInstance(RubyClass.java:931)", "org.jruby.RubyClass$INVOKER$i$newInstance.call(RubyClass$INVOKER$i$newInstance.gen)", "org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:452)", "org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:92)", "org.jruby.ir.instructions.CallBase.interpret(CallBase.java:561)", "org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:367)", "org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:66)", "org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:88)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:238)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:225)", "org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:228)", "org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:516)", "org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:293)", "org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:328)", "org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:66)", "org.jruby.ir.interpreter.Interpreter.INTERPRET_BLOCK(Interpreter.java:116)", "org.jruby.runtime.MixedModeIRBlockBody.commonYieldPath(MixedModeIRBlockBody.java:136)", "org.jruby.runtime.IRBlockBody.call(IRBlockBody.java:66)", "org.jruby.runtime.IRBlockBody.call(IRBlockBody.java:58)", "org.jruby.runtime.Block.call(Block.java:143)", "org.jruby.RubyProc.call(RubyProc.java:352)", "org.jruby.internal.runtime.RubyRunnable.run(RubyRunnable.java:110)", "java.base/java.lang.Thread.run(Thread.java:833)"]}
[2023-11-03T14:35:29,865][INFO ][logstash.runner ] Logstash shut down.
[2023-11-03T14:35:29,871][FATAL][org.logstash.Logstash ] Logstash stopped processing because of an error: (SystemExit) exit
org.jruby.exceptions.SystemExit: (SystemExit) exit
at org.jruby.RubyKernel.exit(org/jruby/RubyKernel.java:795) ~[jruby.jar:?]
at org.jruby.RubyKernel.exit(org/jruby/RubyKernel.java:758) ~[jruby.jar:?]
at usr.share.logstash.lib.bootstrap.environment.

(/usr/share/logstash/lib/bootstrap/environment.rb:90) ~[?:?]
[2023-11-03T14:35:51,608][INFO ][logstash.runner ] Log4j configuration path used is: /etc/logstash/log4j2.properties
[2023-11-03T14:35:51,615][INFO ][logstash.runner ] Starting Logstash {"logstash.version"=>"8.10.4", "jruby.version"=>"jruby 9.4.2.0 (3.1.0) 2023-03-08 90d2913fda OpenJDK 64-Bit Server VM 17.0.8+7 on 17.0.8+7 +indy +jit [x86_64-linux]"}
[2023-11-03T14:35:51,618][INFO ][logstash.runner ] JVM bootstrap flags: [-Xms1g, -Xmx1g, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djruby.compile.invokedynamic=true, -XX:+HeapDumpOnOutOfMemoryError, -Djava.security.egd=file:/dev/urandom, -Dlog4j2.isThreadContextMapInheritable=true, -Djruby.regexp.interruptible=true, -Djdk.io.File.enableADS=true, --add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED, --add-exports=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED, --add-exports=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED, --add-exports=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED, --add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED, --add-opens=java.base/java.security=ALL-UNNAMED, --add-opens=java.base/java.io=ALL-UNNAMED, --add-opens=java.base/java.nio.channels=ALL-UNNAMED, --add-opens=java.base/sun.nio.ch=ALL-UNNAMED, --add-opens=java.management/sun.management=ALL-UNNAMED]