org.xwiki.rendering.macro.MacroExecutionException: Failed to evaluate Velocity Macro for content [#set($isNumberedHeadingsEnabled = $services.numbered.headings.isNumberedHeadingsEnabled())
#set ($origdoc = $xwiki.getDocument('NumberedHeadings.Code.NumberedHeadings'))
#set ($locale = $services.localization.getCurrentLocale())
#set($ssxHref = $origdoc.getURL('ssx', $escapetool.url({
  'isNumberedHeadingsEnabled': $isNumberedHeadingsEnabled,
  'locale': $services.localization.getCurrentLocale(),
  'docVersion': $origdoc.getVersion()
})))
#set ($discard = $services.numbered.common.insertCSS($locale))
{{html clean='false'}}
<link rel='stylesheet' type='text/css' href="$escapetool.xml($ssxHref)"/>
{{/html}}]
 at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:186)
 at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:60)
 at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:279)
 at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182)
 at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58)
 at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:441)
 at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183)
 at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.transform(AbstractBlockAsyncRenderer.java:76)
 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRenderer.tranform(DefaultBlockAsyncRenderer.java:154)
 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRenderer.execute(DefaultBlockAsyncRenderer.java:137)
 at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157)
 at org.xwiki.uiextension.internal.WikiUIExtension.render(WikiUIExtension.java:201)
 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor$DecoratorWrapper.render(DefaultBlockAsyncRendererExecutor.java:67)
 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor$DecoratorWrapper.render(DefaultBlockAsyncRendererExecutor.java:49)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)
 at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125)
 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:113)
 at org.xwiki.uiextension.internal.AbstractWikiUIExtension.execute(AbstractWikiUIExtension.java:101)
 at org.xwiki.uiextension.internal.AbstractWikiUIExtension.execute(AbstractWikiUIExtension.java:89)
 at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
 at java.base/java.lang.reflect.Method.invoke(Method.java:580)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
 at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
 at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704)
 at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75)
 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:167)
 at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
 at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
 at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309)
 at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279)
 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
 at org.apache.velocity.Template.merge(Template.java:358)
 at org.apache.velocity.Template.merge(Template.java:262)
 at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:233)
 at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:107)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)
 at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:907)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:869)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:856)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:811)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:803)
 at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79)
 at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73)
 at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54)
 at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
 at java.base/java.lang.reflect.Method.invoke(Method.java:580)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
 at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
 at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
 at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:217)
 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
 at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
 at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171)
 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
 at org.apache.velocity.Template.merge(Template.java:358)
 at org.apache.velocity.Template.merge(Template.java:262)
 at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:233)
 at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:107)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)
 at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:907)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:869)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:856)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:811)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:803)
 at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79)
 at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73)
 at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54)
 at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
 at java.base/java.lang.reflect.Method.invoke(Method.java:580)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
 at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
 at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
 at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:217)
 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
 at org.apache.velocity.Template.merge(Template.java:358)
 at org.apache.velocity.Template.merge(Template.java:262)
 at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:233)
 at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:107)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)
 at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:907)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:869)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:856)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:811)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:803)
 at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79)
 at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73)
 at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54)
 at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
 at java.base/java.lang.reflect.Method.invoke(Method.java:580)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
 at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
 at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
 at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:217)
 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
 at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
 at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
 at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
 at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190)
 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
 at org.apache.velocity.Template.merge(Template.java:358)
 at org.apache.velocity.Template.merge(Template.java:262)
 at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:233)
 at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:107)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135)
 at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)
 at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)
 at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
 at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:907)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:869)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:849)
 at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:835)
 at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:91)
 at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:85)
 at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2570)
 at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:180)
 at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:651)
 at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:339)
 at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:111)
 at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:614)
 at org.eclipse.jetty.ee10.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1394)
 at org.eclipse.jetty.ee10.servlet.ServletHolder.handle(ServletHolder.java:751)
 at org.eclipse.jetty.ee10.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1622)
 at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:123)
 at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)
 at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)
 at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:71)
 at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)
 at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)
 at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:66)
 at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)
 at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)
 at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:135)
 at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)
 at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)
 at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:212)
 at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)
 at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)
 at org.xwiki.container.servlet.filters.internal.SafeRedirectFilter.doFilter(SafeRedirectFilter.java:106)
 at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)
 at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)
 at org.xwiki.container.servlet.filters.internal.ResolveRelativeRedirectFilter.doFilter(ResolveRelativeRedirectFilter.java:129)
 at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)
 at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)
 at org.xwiki.container.servlet.filters.internal.SourceURLResolverFilter.doFilter(SourceURLResolverFilter.java:177)
 at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)
 at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)
 at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:120)
 at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:208)
 at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)
 at org.eclipse.jetty.ee10.websocket.servlet.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:195)
 at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)
 at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)
 at org.eclipse.jetty.ee10.servlet.ServletHandler$MappedServlet.handle(ServletHandler.java:1555)
 at org.eclipse.jetty.ee10.servlet.ServletChannel.dispatch(ServletChannel.java:823)
 at org.eclipse.jetty.ee10.servlet.ServletChannel.handle(ServletChannel.java:440)
 at org.eclipse.jetty.ee10.servlet.ServletHandler.handle(ServletHandler.java:470)
 at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:575)
 at org.eclipse.jetty.ee10.servlet.SessionHandler.handle(SessionHandler.java:717)
 at org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1071)
 at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:181)
 at org.eclipse.jetty.server.Server.handle(Server.java:182)
 at org.eclipse.jetty.server.internal.HttpChannelState$HandlerInvoker.run(HttpChannelState.java:677)
 at org.eclipse.jetty.server.internal.HttpConnection.onFillable(HttpConnection.java:416)
 at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:322)
 at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:99)
 at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)
 at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:480)
 at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:443)
 at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:293)
 at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:201)
 at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:311)
 at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:981)
 at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1211)
 at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1166)
 at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: org.xwiki.velocity.XWikiVelocityException: Failed to evaluate content with namespace [nkrsdemo:NumberedHeadings.Code.NumberedHeadings^XWiki.UIExtensionClass[1]]
 at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:235)
 at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:168)
 ... 228 more
Caused by: org.apache.velocity.exception.MethodInvocationException: Invocation of method 'insertCSS' in  class org.xwiki.contrib.numbered.content.common.NumberedCommonScriptService threw exception java.lang.NullPointerException at nkrsdemo:NumberedHeadings.Code.NumberedHeadings[line 9, column 44]
 at org.apache.velocity.runtime.parser.node.ASTMethod.handleInvocationException(ASTMethod.java:308)
 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:235)
 at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
 at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704)
 at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75)
 at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:242)
 at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
 at org.apache.velocity.Template.merge(Template.java:358)
 at org.apache.velocity.Template.merge(Template.java:262)
 at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:233)
 ... 229 more
Caused by: java.lang.NullPointerException
 at java.base/java.util.Objects.requireNonNull(Objects.java:233)
 at java.base/java.util.stream.Collectors.lambda$uniqKeysMapAccumulator$1(Collectors.java:180)
 at java.base/java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169)
 at java.base/java.util.AbstractList$RandomAccessSpliterator.forEachRemaining(AbstractList.java:722)
 at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
 at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
 at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921)
 at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
 at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682)
 at org.xwiki.contrib.numbered.content.figures.internal.NumberedFiguresDisplayDataManager.getFigureDisplayData(NumberedFiguresDisplayDataManager.java:78)
 at org.xwiki.contrib.numbered.content.figures.internal.FiguresCSSCountersProvider.selectors(FiguresCSSCountersProvider.java:59)
 at org.xwiki.contrib.numbered.content.common.internal.CounterInitializationCSSMerge.lambda$merge$0(CounterInitializationCSSMerge.java:67)
 at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
 at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708)
 at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
 at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
 at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921)
 at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
 at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682)
 at org.xwiki.contrib.numbered.content.common.internal.CounterInitializationCSSMerge.mergeSelectors(CounterInitializationCSSMerge.java:87)
 at org.xwiki.contrib.numbered.content.common.internal.CounterInitializationCSSMerge.merge(CounterInitializationCSSMerge.java:67)
 at org.xwiki.contrib.numbered.content.common.NumberedCommonScriptService.getMergedCSS(NumberedCommonScriptService.java:91)
 at org.xwiki.contrib.numbered.content.common.NumberedCommonScriptService.hash(NumberedCommonScriptService.java:86)
 at org.xwiki.contrib.numbered.content.common.NumberedCommonScriptService.insertCSS(NumberedCommonScriptService.java:77)
 at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
 at java.base/java.lang.reflect.Method.invoke(Method.java:580)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
 at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
 ... 237 more