class java.lang.NoClassDefFoundError when upgrading the Markdown extension

Failed to get fields for class [org.xwiki.contrib.rendering.markdown.markdown12.internal.parser.DefaultFlexmarkNodeVisitor] because the class [com/vladsch/flexmark/util/ast/NodeAdaptingVisitHandler] couldn't be found in the ClassLoader.
class java.lang.NoClassDefFoundError: Failed to get fields for class [org.xwiki.contrib.rendering.markdown.markdown12.internal.parser.DefaultFlexmarkNodeVisitor] because the class [com/vladsch/flexmark/util/ast/NodeAdaptingVisitHandler] couldn't be found in the ClassLoader.
at org.xwiki.component.util.ReflectionUtils.getAllFields(ReflectionUtils.java:85)
at org.xwiki.component.annotation.ComponentDescriptorFactory.createComponentDescriptor(ComponentDescriptorFactory.java:135)
at org.xwiki.component.annotation.ComponentDescriptorFactory.createComponentDescriptors(ComponentDescriptorFactory.java:108)
at org.xwiki.component.annotation.ComponentAnnotationLoader.getComponentsDescriptors(ComponentAnnotationLoader.java:170)
at org.xwiki.component.annotation.ComponentAnnotationLoader.register(ComponentAnnotationLoader.java:217)
at org.xwiki.component.annotation.ComponentAnnotationLoader.initialize(ComponentAnnotationLoader.java:138)
at org.xwiki.extension.jar.internal.handler.JarExtensionHandler.loadComponents(JarExtensionHandler.java:251)
at org.xwiki.extension.jar.internal.handler.JarExtensionHandler.install(JarExtensionHandler.java:183)
at org.xwiki.extension.handler.internal.DefaultExtensionHandlerManager.install(DefaultExtensionHandlerManager.java:85)
at org.xwiki.extension.job.internal.AbstractExtensionJob.installExtension(AbstractExtensionJob.java:306)
at org.xwiki.extension.job.internal.AbstractExtensionJob.applyAction(AbstractExtensionJob.java:209)
at org.xwiki.extension.job.internal.AbstractExtensionJob.applyActions(AbstractExtensionJob.java:157)
at org.xwiki.extension.job.internal.InstallJob.runInternal(InstallJob.java:154)
at org.xwiki.job.AbstractJob.runInContext(AbstractJob.java:240)
at org.xwiki.job.AbstractJob.run(AbstractJob.java:217)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) 
at java.base/java.lang.Thread.run(Thread.java:834)