Error number 4001 in 4: Error while parsing velocity page /templates/titlevars.vm Wrapped Exception: Failed to evaluate content with id [/templates/titlevars.vm]

    Error number 4001 in 4: Error while parsing velocity page /templates/titlevars.vm
    Wrapped Exception: Failed to evaluate content with id [/templates/titlevars.vm]
    com.xpn.xwiki.XWikiException: Error number 4001 in 4: Error while parsing velocity page /templates/titlevars.vm
    Wrapped Exception: Failed to evaluate content with id [/templates/titlevars.vm]
    	at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:110)
    	at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluate(DefaultPrivilegedTemplateRenderer.java:125)
    	at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluateTemplate(DefaultPrivilegedTemplateRenderer.java:75)
    	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1858)
    	at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1798)
    	at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:895)
    	at sun.reflect.GeneratedMethodAccessor186.invoke(Unknown Source)
    	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    	at java.lang.reflect.Method.invoke(Method.java:597)
    	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
    	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
    	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
    	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
    	at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
    	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
    	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
    	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
    	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
    	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
    	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
    	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228)
    	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:187)
    	at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:105)
    	at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1911)
    	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1830)
    	at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1798)
    	at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:895)
    	at sun.reflect.GeneratedMethodAccessor186.invoke(Unknown Source)
    	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    	at java.lang.reflect.Method.invoke(Method.java:597)
    	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
    	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
    	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
    	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
    	at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
    	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
    	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
    	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
    	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
    	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
    	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
    	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
    	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
    	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
    	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)
    	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
    	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228)
    	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:187)
    	at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:105)
    	at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluate(DefaultPrivilegedTemplateRenderer.java:125)
    	at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluateTemplate(DefaultPrivilegedTemplateRenderer.java:75)
    	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1858)
    	at com.xpn.xwiki.export.html.HtmlPackager.renderDocument(HtmlPackager.java:221)
    	at com.xpn.xwiki.export.html.HtmlPackager.renderDocuments(HtmlPackager.java:274)
    	at com.xpn.xwiki.export.html.HtmlPackager.export(HtmlPackager.java:315)
    	at com.xpn.xwiki.web.ExportAction.exportHTML(ExportAction.java:174)
    	at com.xpn.xwiki.web.ExportAction.render(ExportAction.java:62)
    	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:284)
    	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:123)
    	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
    	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
    	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
    	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
    	at javax.servlet.http.HttpServlet.service(HttpServlet.java:735)
    	at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
    	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669)
    	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1448)
    	at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:120)
    	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
    	at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:144)
    	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
    	at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:66)
    	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
    	at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
    	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
    	at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
    	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
    	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
    	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
    	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
    	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
    	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
    	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
    	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
    	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
    	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
    	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
    	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
    	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
    	at org.eclipse.jetty.server.Server.handle(Server.java:368)
    	at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:488)
    	at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:932)
    	at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:994)
    	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)
    	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
    	at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
    	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628)
    	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
    	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
    	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
    	at java.lang.Thread.run(Thread.java:662)
    Caused by: org.xwiki.velocity.XWikiVelocityException: Failed to evaluate content with id [/templates/titlevars.vm]
    	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:247)
    	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:187)
    	at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:105)
    	... 100 more
    Caused by: org.apache.velocity.exception.MethodInvocationException: Invocation of method 'find' in  class org.xwiki.velocity.tools.RegexTool threw exception java.lang.NullPointerException at /templates/titlevars.vm[line 27, column 35]
    	at org.apache.velocity.runtime.parser.node.ASTMethod.handleInvocationException(ASTMethod.java:243)
    	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:187)
    	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
    	at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:567)
    	at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:71)
    	at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:142)
    	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
    	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
    	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
    	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228)
    	... 102 more
    Caused by: java.lang.NullPointerException
    	at java.util.regex.Matcher.getTextLength(Matcher.java:1140)
    	at java.util.regex.Matcher.reset(Matcher.java:291)
    	at java.util.regex.Matcher.<init>(Matcher.java:211)
    	at java.util.regex.Pattern.matcher(Pattern.java:888)
    	at org.xwiki.velocity.tools.RegexTool.find(RegexTool.java:103)
    	at sun.reflect.GeneratedMethodAccessor526.invoke(Unknown Source)
    	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    	at java.lang.reflect.Method.invoke(Method.java:597)
    	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
    	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
    	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
    	... 110 more

    Wrapped Exception:

    org.apache.velocity.exception.MethodInvocationException: Invocation of method 'find' in  class org.xwiki.velocity.tools.RegexTool threw exception java.lang.NullPointerException at /templates/titlevars.vm[line 27, column 35]
    	at org.apache.velocity.runtime.parser.node.ASTMethod.handleInvocationException(ASTMethod.java:243)
    	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:187)
    	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
    	at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:567)
    	at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:71)
    	at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:142)
    	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
    	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
    	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
    	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228)
    	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:187)
    	at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:105)
    	at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluate(DefaultPrivilegedTemplateRenderer.java:125)
    	at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluateTemplate(DefaultPrivilegedTemplateRenderer.java:75)
    	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1858)
    	at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1798)
    	at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:895)
    	at sun.reflect.GeneratedMethodAccessor186.invoke(Unknown Source)
    	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    	at java.lang.reflect.Method.invoke(Method.java:597)
    	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
    	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
    	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
    	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
    	at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
    	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
    	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
    	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
    	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
    	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
    	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
    	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228)
    	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:187)
    	at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:105)
    	at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1911)
    	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1830)
    	at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1798)
    	at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:895)
    	at sun.reflect.GeneratedMethodAccessor186.invoke(Unknown Source)
    	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    	at java.lang.reflect.Method.invoke(Method.java:597)
    	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
    	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
    	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
    	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
    	at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
    	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
    	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
    	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
    	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
    	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
    	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
    	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
    	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
    	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
    	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)
    	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
    	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228)
    	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:187)
    	at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:105)
    	at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluate(DefaultPrivilegedTemplateRenderer.java:125)
    	at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluateTemplate(DefaultPrivilegedTemplateRenderer.java:75)
    	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1858)
    	at com.xpn.xwiki.export.html.HtmlPackager.renderDocument(HtmlPackager.java:221)
    	at com.xpn.xwiki.export.html.HtmlPackager.renderDocuments(HtmlPackager.java:274)
    	at com.xpn.xwiki.export.html.HtmlPackager.export(HtmlPackager.java:315)
    	at com.xpn.xwiki.web.ExportAction.exportHTML(ExportAction.java:174)
    	at com.xpn.xwiki.web.ExportAction.render(ExportAction.java:62)
    	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:284)
    	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:123)
    	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
    	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
    	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
    	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
    	at javax.servlet.http.HttpServlet.service(HttpServlet.java:735)
    	at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
    	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669)
    	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1448)
    	at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:120)
    	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
    	at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:144)
    	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
    	at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:66)
    	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
    	at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
    	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
    	at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
    	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
    	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
    	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
    	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
    	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
    	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
    	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
    	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
    	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
    	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
    	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
    	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
    	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
    	at org.eclipse.jetty.server.Server.handle(Server.java:368)
    	at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:488)
    	at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:932)
    	at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:994)
    	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)
    	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
    	at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
    	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628)
    	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
    	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
    	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
    	at java.lang.Thread.run(Thread.java:662)
    Caused by: java.lang.NullPointerException
    	at java.util.regex.Matcher.getTextLength(Matcher.java:1140)
    	at java.util.regex.Matcher.reset(Matcher.java:291)
    	at java.util.regex.Matcher.<init>(Matcher.java:211)
    	at java.util.regex.Pattern.matcher(Pattern.java:888)
    	at org.xwiki.velocity.tools.RegexTool.find(RegexTool.java:103)
    	at sun.reflect.GeneratedMethodAccessor526.invoke(Unknown Source)
    	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    	at java.lang.reflect.Method.invoke(Method.java:597)
    	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
    	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
    	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
    	... 110 more

# Search Suggest

activated: Sì

## Sources

A suggest source is a URL that takes 3 parameters: query, input and nb. The query parameter must contain a __INPUT__ placeholder. This URL must process the query with the given user input and return the result in the XML format expected by the suggest component.

Name | URL | Query | Results Number | Icon | Highlight matches | Activated
--- | --- | --- | --- | --- | --- | ---
$services.localization.render('platform.search.suggestSourceDocumentName') | $xwiki.getURL('XWiki.SuggestLuceneService', 'get', 'outputSyntax=plain') | name:INPUT* OR web:INPUT* | 3 | $xwiki.getSkinFile('icons/silk/page_white_text.png') | Sì | Sì
$services.localization.render('platform.search.suggestSourceDocumentContent') | $xwiki.getURL('XWiki.SuggestLuceneService', 'get', 'outputSyntax=plain') | INPUT* | 3 | $xwiki.getSkinFile('icons/silk/page_white_text.png') | No | Sì
$services.localization.render('platform.search.suggestSourceAttachmentName') | $xwiki.getURL('XWiki.SuggestLuceneService', 'get', 'outputSyntax=plain') | filename:INPUT* AND type:attachment | 3 | $xwiki.getSkinFile('icons/silk/attach.png') | Sì | Sì
$services.localization.render('platform.search.suggestSourceAttachmentContent') | $xwiki.getURL('XWiki.SuggestLuceneService', 'get', 'outputSyntax=plain') | ft:INPUT* AND type:attachment | 3 | $xwiki.getSkinFile('icons/silk/attach.png') | No | Sì
$services.localization.render('platform.search.suggestSourceBlogPost') | $xwiki.getURL('XWiki.SuggestLuceneService', 'get', 'outputSyntax=plain') | INPUT* AND object:Blog.BlogPostClass | 3 | $xwiki.getSkinFile('icons/silk/page_white_picture.png') | No | No
$services.localization.render('platform.search.suggestSourceUsers') | $xwiki.getURL('XWiki.SuggestLuceneService', 'get', 'outputSyntax=plain') | INPUT* AND object:XWiki.XWikiUsers | 3 | $xwiki.getSkinFile('icons/silk/user.png') | No | Sì