ClassCastException when prefix is specified several times in configuration

class java.util.ArrayList cannot be cast to class java.lang.String (java.util.ArrayList and java.lang.String are in module java.base of loader 'bootstrap')
class java.lang.ClassCastException: class java.util.ArrayList cannot be cast to class java.lang.String (java.util.ArrayList and java.lang.String are in module java.base of loader 'bootstrap')
    at org.xwiki.contrib.urlmapping.DefaultURLMappingConfiguration.getPrefix(DefaultURLMappingConfiguration.java:130)
    at org.xwiki.contrib.urlmapping.AbstractURLMappingPrefixHandler.getPrefix(AbstractURLMappingPrefixHandler.java:127)
    at org.xwiki.contrib.urlmapping.internal.URLPrefixHandlerRegistrationListener.registerHandler(URLPrefixHandlerRegistrationListener.java:134)
    at org.xwiki.contrib.urlmapping.internal.URLPrefixHandlerRegistrationListener.onEvent(URLPrefixHandlerRegistrationListener.java:102)
    at org.xwiki.observation.internal.DefaultObservationManager.notify(DefaultObservationManager.java:338)
    at org.xwiki.observation.internal.DefaultObservationManager.notify(DefaultObservationManager.java:303)
    at org.xwiki.component.internal.StackingComponentEventManager.sendEvent(StackingComponentEventManager.java:151)
    at org.xwiki.component.internal.StackingComponentEventManager.flushEvents(StackingComponentEventManager.java:92)
    at org.xwiki.extension.jar.internal.handler.JarExtensionHandler.loadComponents(JarExtensionHandler.java:261)
    at org.xwiki.extension.jar.internal.handler.JarExtensionHandler.install(JarExtensionHandler.java:183)
    at org.xwiki.extension.jar.internal.handler.JarExtensionHandler.initialize(JarExtensionHandler.java:144)
    at org.xwiki.extension.handler.internal.DefaultExtensionHandlerManager.initialize(DefaultExtensionHandlerManager.java:154)
    at org.xwiki.extension.handler.internal.DefaultExtensionInitializer.initializeExtensionInNamespace(DefaultExtensionInitializer.java:175)
    at org.xwiki.extension.handler.internal.DefaultExtensionInitializer.initializeExtensionInNamespace(DefaultExtensionInitializer.java:148)
    at org.xwiki.extension.handler.internal.DefaultExtensionInitializer.initializeExtension(DefaultExtensionInitializer.java:126)
    at org.xwiki.extension.handler.internal.DefaultExtensionInitializer.initialize(DefaultExtensionInitializer.java:104)
    at org.xwiki.extension.jar.internal.handler.JarExtensionJobFinishingListener.initializeExtensions(JarExtensionJobFinishingListener.java:244)
    at org.xwiki.extension.jar.internal.handler.JarExtensionJobFinishingListener.onJobFinishedEvent(JarExtensionJobFinishingListener.java:263)
    at org.xwiki.extension.jar.internal.handler.JarExtensionJobFinishingListener.onEvent(JarExtensionJobFinishingListener.java:223)
    at org.xwiki.observation.internal.DefaultObservationManager.notify(DefaultObservationManager.java:338)
    at org.xwiki.observation.internal.DefaultObservationManager.notify(DefaultObservationManager.java:303)
    at org.xwiki.job.AbstractJob.jobFinished(AbstractJob.java:297)
    at org.xwiki.extension.job.internal.AbstractExtensionJob.jobFinished(AbstractExtensionJob.java:134)
    at org.xwiki.job.AbstractJob.runInContext(AbstractJob.java:251)
    at org.xwiki.job.AbstractJob.run(AbstractJob.java:223)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
    at java.base/java.lang.Thread.run(Thread.java:840)