Failed to initialize class net.opentsdb.tsd.KafkaRpcPlugin

[FredShuai]

What needs to be done to use the plug-in kafka? Create themes or other related reference examples? Follow the instructions to download the code, compile it, and add the corresponding parameters to the opentsdb configuration file. When starting tsd, the error will be reported as follows：
[root@hadoop5 bin]# ./tsdb tsd
Exception in thread "main" java.lang.RuntimeException: Initialization failed
at net.opentsdb.tools.TSDMain.main(TSDMain.java:237)
Caused by: java.lang.RuntimeException: Failed to initialize class net.opentsdb.tsd.KafkaRpcPlugin
at net.opentsdb.tsd.RpcManager.createAndInitialize(RpcManager.java:429)
at net.opentsdb.tsd.RpcManager.initializeRpcPlugins(RpcManager.java:402)
at net.opentsdb.tsd.RpcManager.instance(RpcManager.java:142)
at net.opentsdb.tools.TSDMain.main(TSDMain.java:202)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at net.opentsdb.tsd.RpcManager.createAndInitialize(RpcManager.java:421)
... 3 more
Caused by: java.lang.NoClassDefFoundError: joptsimple/internal/Strings
at net.opentsdb.tsd.KafkaRpcPluginGroup.(KafkaRpcPluginGroup.java:136)
at net.opentsdb.tsd.KafkaRpcPlugin.createConsumerGroups(KafkaRpcPlugin.java:189)
at net.opentsdb.tsd.KafkaRpcPlugin.initialize(KafkaRpcPlugin.java:91)
... 8 more
Caused by: java.lang.ClassNotFoundException: joptsimple.internal.Strings
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 11 more
If you don't add a plug-in, it will start normally.I don't know why, do you need to modify Linux to install plug-ins and so on? For our beginners, please provide a complete reference sample, thank you!
Supplement:
A sentence like this is printed in the log:
10:16:32.439 INFO [TSDB.initializePlugins] - Successfully initialized storage exception handler plugin [net.opentsdb.tsd.KafkaStorageExceptionHandler] version: 2.4.0
My opentsdb version is 2.3.1, plug-in version 2.3. X