There already exists an implementation for service org.kie.api.internal.assembler.KieAssemblers with same priority 0 - eclipse

Question

I am trying to test a Hello World example of BPMN on Eclipse. I have followed the section "24.1. jBPM Eclipse Plugin" on https://docs.jbpm.org/7.67.0.Final/jbpm-docs/html_single where I select to use a simple "Hello World" process and to include a JUnit test class that will be used to test the process.
However, I am facing an error when I am running the ProcessTest.java as a JUnit Test.
Here is the full error :
java.lang.ExceptionInInitializerError
at org.drools.dynamic.DynamicServiceRegistrySupplier.get(DynamicServiceRegistrySupplier.java:32)
at org.drools.dynamic.DynamicServiceRegistrySupplier.get(DynamicServiceRegistrySupplier.java:23)
at org.kie.api.internal.utils.ServiceRegistry$Impl.getServiceRegistry(ServiceRegistry.java:90)
at org.kie.api.internal.utils.ServiceRegistry$ServiceRegistryHolder.<clinit>(ServiceRegistry.java:49)
at org.kie.api.internal.utils.ServiceRegistry.getInstance(ServiceRegistry.java:41)
at org.kie.api.internal.utils.ServiceRegistry.getService(ServiceRegistry.java:37)
at org.kie.internal.builder.KnowledgeBuilderFactory$FactoryServiceHolder.<clinit>(KnowledgeBuilderFactory.java:39)
at org.kie.internal.builder.KnowledgeBuilderFactory.newKnowledgeBuilder(KnowledgeBuilderFactory.java:52)
at org.jbpm.runtime.manager.impl.SimpleRuntimeEnvironment.<init>(SimpleRuntimeEnvironment.java:99)
at org.jbpm.runtime.manager.impl.SimpleRuntimeEnvironment.<init>(SimpleRuntimeEnvironment.java:93)
at org.jbpm.runtime.manager.impl.RuntimeEnvironmentBuilder.<init>(RuntimeEnvironmentBuilder.java:84)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at org.kie.api.runtime.manager.RuntimeEnvironmentBuilder$Factory.<clinit>(RuntimeEnvironmentBuilder.java:61)
at org.jbpm.test.JbpmJUnitBaseTestCase.createRuntimeManager(JbpmJUnitBaseTestCase.java:351)
at org.jbpm.test.JbpmJUnitBaseTestCase.createRuntimeManager(JbpmJUnitBaseTestCase.java:293)
at org.jbpm.test.JbpmJUnitBaseTestCase.createRuntimeManager(JbpmJUnitBaseTestCase.java:275)
at com.sample.ProcessTest.testProcess(ProcessTest.java:18)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:93)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:40)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:529)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:756)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:452)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:210)
Caused by: java.lang.RuntimeException: Unable to build kie service url = jar:file:/C:/Users/lucie/.m2/repository/org/kie/kie-internal/7.71.0.Final/kie-internal-7.71.0.Final.jar!/META-INF/kie/kie-internal/kie.conf
at org.kie.api.internal.utils.ServiceDiscoveryImpl.registerConfs(ServiceDiscoveryImpl.java:127)
at org.kie.api.internal.utils.ServiceDiscoveryImpl.lambda$getServices$1(ServiceDiscoveryImpl.java:105)
at java.util.Optional.ifPresent(Unknown Source)
at org.kie.api.internal.utils.ServiceDiscoveryImpl.getServices(ServiceDiscoveryImpl.java:103)
at org.kie.api.internal.utils.ServiceRegistry$Impl.<init>(ServiceRegistry.java:62)
at org.drools.dynamic.DynamicServiceRegistrySupplier$LazyHolder.<clinit>(DynamicServiceRegistrySupplier.java:27)
... 51 more
Caused by: java.lang.RuntimeException: There already exists an implementation for service org.kie.api.internal.assembler.KieAssemblers with same priority 0
at org.kie.api.internal.utils.ServiceDiscoveryImpl$PriorityMap.put(ServiceDiscoveryImpl.java:244)
at org.kie.api.internal.utils.ServiceDiscoveryImpl.processKieService(ServiceDiscoveryImpl.java:146)
at org.kie.api.internal.utils.ServiceDiscoveryImpl.registerConfs(ServiceDiscoveryImpl.java:123)
... 56 more
Here is my pom.xml :
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>msc</groupId>
<artifactId>test</artifactId>
<version>0.0.1-SNAPSHOT</version>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.jbpm</groupId>
<artifactId>jbpm-test</artifactId>
<version>7.71.0.Final</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.jbpm</groupId>
<artifactId>jbpm-runtime-manager</artifactId>
<version>7.71.0.Final</version>
</dependency>
<dependency>
<groupId>org.kie</groupId>
<artifactId>kie-internal</artifactId>
<version>7.71.0.Final</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.2</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.3.27.Final</version>
</dependency>
</dependencies>
</project>
I have tried to clear the Maven cache but the error is still here. I don't know how I could try to resolve it, so I was wondering if anyone has an idea ? Thanks a lot for the help !
Here is the ProcessTest.java :
package com.sample;
import org.jbpm.test.JbpmJUnitBaseTestCase;
import org.junit.Test;
import org.kie.api.runtime.KieSession;
import org.kie.api.runtime.manager.RuntimeEngine;
import org.kie.api.runtime.manager.RuntimeManager;
import org.kie.api.runtime.process.ProcessInstance;
/**
* This is a sample file to test a process.
*/
public class ProcessTest extends JbpmJUnitBaseTestCase {
#SuppressWarnings("deprecation")
#Test
public void testProcess() {
RuntimeManager manager = createRuntimeManager("sample.bpmn");
RuntimeEngine engine = getRuntimeEngine(null);
KieSession ksession = engine.getKieSession();
ProcessInstance processInstance = ksession.startProcess("com.sample.bpmn.hello");
// check whether the process instance has completed successfully
assertProcessInstanceCompleted(processInstance.getId(), ksession);
assertNodeTriggered(processInstance.getId(), "Hello");
manager.disposeRuntimeEngine(engine);
manager.close();
}
}