[JPMS] Calls coming from unnamed module

Exception in thread "main" java.lang.IllegalAccessError: class org.drools.base.io.github.mwkroening.optaplannermodulepathexample.domain.CloudProcess520162288$getComputer (in unnamed module @0x4d68b571) cannot access class io.github.mwkroening.optaplannermodulepathexample.domain.CloudProcess (in module io.github.mwkroening.optaplannermodulepathexample) because module io.github.mwkroening.optaplannermodulepathexample does not export io.github.mwkroening.optaplannermodulepathexample.domain to unnamed module @0x4d68b571
	at org.drools.base.io.github.mwkroening.optaplannermodulepathexample.domain.CloudProcess520162288$getComputer.getValue(Unknown Source)
	at org.drools.core@7.18.0.Final/org.drools.core.base.extractors.BaseObjectClassFieldReader.getHashCode(BaseObjectClassFieldReader.java:180)
	at org.drools.core@7.18.0.Final/org.drools.core.base.ClassFieldReader.getHashCode(ClassFieldReader.java:224)
	at org.drools.core@7.18.0.Final/org.drools.core.util.AbstractHashTable$FieldIndex.hashCodeOf(AbstractHashTable.java:344)
	at org.drools.core@7.18.0.Final/org.drools.core.util.AbstractHashTable$SingleIndex.hashCodeOf(AbstractHashTable.java:409)
	at org.drools.core@7.18.0.Final/org.drools.core.util.index.TupleIndexHashTable.getOrCreate(TupleIndexHashTable.java:392)
	at org.drools.core@7.18.0.Final/org.drools.core.util.index.TupleIndexHashTable.add(TupleIndexHashTable.java:358)
	at org.drools.core@7.18.0.Final/org.drools.core.phreak.PhreakAccumulateNode.doRightInserts(PhreakAccumulateNode.java:217)
	at org.drools.core@7.18.0.Final/org.drools.core.phreak.PhreakAccumulateNode.doNode(PhreakAccumulateNode.java:85)
	at org.drools.core@7.18.0.Final/org.drools.core.phreak.RuleNetworkEvaluator.switchOnDoBetaNode(RuleNetworkEvaluator.java:581)
	at org.drools.core@7.18.0.Final/org.drools.core.phreak.RuleNetworkEvaluator.evalBetaNode(RuleNetworkEvaluator.java:552)
	at org.drools.core@7.18.0.Final/org.drools.core.phreak.RuleNetworkEvaluator.evalNode(RuleNetworkEvaluator.java:379)
	at org.drools.core@7.18.0.Final/org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:339)
	at org.drools.core@7.18.0.Final/org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:175)
	at org.drools.core@7.18.0.Final/org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:133)
	at org.drools.core@7.18.0.Final/org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:213)
	at org.drools.core@7.18.0.Final/org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:88)
	at org.drools.core@7.18.0.Final/org.drools.core.concurrent.AbstractRuleEvaluator.internalEvaluateAndFire(AbstractRuleEvaluator.java:34)
	at org.drools.core@7.18.0.Final/org.drools.core.concurrent.SequentialRuleEvaluator.evaluateAndFire(SequentialRuleEvaluator.java:43)
	at org.drools.core@7.18.0.Final/org.drools.core.common.DefaultAgenda.fireLoop(DefaultAgenda.java:1062)
	at org.drools.core@7.18.0.Final/org.drools.core.common.DefaultAgenda.internalFireAllRules(DefaultAgenda.java:1009)
	at org.drools.core@7.18.0.Final/org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1001)
	at org.drools.core@7.18.0.Final/org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1330)
	at org.drools.core@7.18.0.Final/org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1321)
	at org.drools.core@7.18.0.Final/org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1305)
	at org.optaplanner.core@7.18.0.Final/org.optaplanner.core.impl.score.director.drools.DroolsScoreDirector.calculateScore(DroolsScoreDirector.java:171)
	at org.optaplanner.core@7.18.0.Final/org.optaplanner.core.impl.solver.recaller.BestSolutionRecaller.solvingStarted(BestSolutionRecaller.java:69)
	at org.optaplanner.core@7.18.0.Final/org.optaplanner.core.impl.solver.AbstractSolver.solvingStarted(AbstractSolver.java:76)
	at org.optaplanner.core@7.18.0.Final/org.optaplanner.core.impl.solver.DefaultSolver.solvingStarted(DefaultSolver.java:210)
	at org.optaplanner.core@7.18.0.Final/org.optaplanner.core.impl.solver.DefaultSolver.solve(DefaultSolver.java:190)
	at io.github.mwkroening.optaplannermodulepathexample/io.github.mwkroening.optaplannermodulepathexample.App.main(App.java:22)