[ERROR] org.optaplanner.examples.tsp.persistence.TspOpenDataFilesTest.readAndWriteSolution  Time elapsed: 0.002 s  <<< ERROR!
java.util.ConcurrentModificationException
    at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1221)
    at org.optaplanner.core.impl.domain.common.accessor.MemberAccessorFactory.buildMemberAccessor(MemberAccessorFactory.java:39)
    at org.optaplanner.core.config.util.ConfigUtils.findPlanningIdMemberAccessor(ConfigUtils.java:474)
    at org.optaplanner.core.impl.score.director.AbstractScoreDirector.assertNonNullPlanningId(AbstractScoreDirector.java:176)
    at org.optaplanner.core.impl.domain.solution.descriptor.SolutionDescriptor.visitAllFacts(SolutionDescriptor.java:865)
    at org.optaplanner.core.impl.score.director.AbstractScoreDirector.setWorkingSolution(AbstractScoreDirector.java:160)
    at org.optaplanner.constraint.streams.drools.DroolsConstraintStreamScoreDirector.setWorkingSolution(DroolsConstraintStreamScoreDirector.java:51)
    at org.optaplanner.core.impl.score.DefaultScoreManager.updateScore(DefaultScoreManager.java:37)