$ mvn gatling:test
[INFO] Scanning for projects...
[INFO] 
[INFO] ----------------< io.gatling:gatling-maven-plugin-demo >----------------
[INFO] Building gatling-maven-plugin-demo 3.2.1
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- gatling-maven-plugin:3.0.3:test (default-cli) @ gatling-maven-plugin-demo ---
12:40:28.497 [ERROR] i.g.a.Gatling$ - Run crashed
java.lang.IncompatibleClassChangeError: Implementing class
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at computerdatabase.TestAMQPplugin.<init>(TestAMQPplugin.scala:39)
	... 16 common frames omitted
Wrapped by: java.lang.reflect.InvocationTargetException: null
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at io.gatling.app.Runner.run0(Runner.scala:74)
	at io.gatling.app.Runner.run(Runner.scala:60)
	at io.gatling.app.Gatling$.start(Gatling.scala:73)
	at io.gatling.app.Gatling$.fromArgs(Gatling.scala:46)
	at io.gatling.app.Gatling$.main(Gatling.scala:38)
	at io.gatling.app.Gatling.main(Gatling.scala)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at io.gatling.mojo.MainWithArgsInFile.runMain(MainWithArgsInFile.java:50)
	at io.gatling.mojo.MainWithArgsInFile.main(MainWithArgsInFile.java:33)
java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at io.gatling.mojo.MainWithArgsInFile.runMain(MainWithArgsInFile.java:50)
	at io.gatling.mojo.MainWithArgsInFile.main(MainWithArgsInFile.java:33)
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at io.gatling.app.Runner.run0(Runner.scala:74)
	at io.gatling.app.Runner.run(Runner.scala:60)
	at io.gatling.app.Gatling$.start(Gatling.scala:73)
	at io.gatling.app.Gatling$.fromArgs(Gatling.scala:46)
	at io.gatling.app.Gatling$.main(Gatling.scala:38)
	at io.gatling.app.Gatling.main(Gatling.scala)
	... 6 more
Caused by: java.lang.IncompatibleClassChangeError: Implementing class
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at computerdatabase.TestAMQPplugin.<init>(TestAMQPplugin.scala:39)
	... 16 more
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  9.242 s
[INFO] Finished at: 2019-10-09T12:40:28+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal io.gatling:gatling-maven-plugin:3.0.3:test (default-cli) on project gatling-maven-plugin-demo: Gatling failed.: Process exited with an error: 255 (Exit value: 255) -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException