org.xwiki.rendering.macro.MacroExecutionException: Failed to evaluate Velocity Macro for content [##
## tagCloudSpace - the space to display the tag cloud for. If blank, display cloud for the whole wiki. Default is blank.
#set ($tagCloudSpace = $xcontext.macro.params.get('space'))
#set ($tagCloudSpaces = $xcontext.macro.params.get('spaces'))
##
## Configurable popularity levels. You must enter an even number of levels. Default: 6.
#set ($popularityLevels = ["notPopular", "notVeryPopular", "somewhatPopular", "popular", "veryPopular", "ultraPopular"])
#set ($levelsHalf = $popularityLevels.size() / 2)
##
$xwiki.ssx.use('XWiki.TagCloud')##
##
#if( $tagCloudSpace && $tagCloudSpaces )
  {{error}}
  ##Do not use space and spaces parameter in the same time.
  {{translation key="xe.tag.paramerror" /}}
  {{/error}}
  #break
#end

##If multiple spaces with "spaces" parameter
#if( $tagCloudSpaces )
  #set ($tagCount = $xwiki.tag.getTagCountForSpaces($tagCloudSpaces))
#else
  ##If only one space
  ## Get tag count map. Key: tag, value: number of occurrences.
  #set ($tagCount = $xwiki.tag.getTagCount("$!tagCloudSpace"))
#end
##
## Only build popularity map if at least one tag exists
#if ($tagCount.size() > 0)
  ##
  ## Store the minimum and maximum number of occurrences.
  #set ($sortedTagCounts = $sorttool.sort($tagCount.values()))
  #set ($maxIndex = $sortedTagCounts.size() - 1)
  #set ($minCount = $sortedTagCounts[0])
  #set ($maxCount = $sortedTagCounts[$maxIndex])
  ##
  ## Calculate the total number of tags in the wiki.
  #set ($totalTagNumber = 0)
  #foreach ($currentTagCount in $sortedTagCounts)
    #set ($totalTagNumber = $totalTagNumber + $currentTagCount)
  #end
  #set ($countAverage = $mathtool.div($totalTagNumber, $tagCount.size()))
  ##
  ## Build popularity map using the difference between minimum / maximum tag occurrences counts, and the average tag occurences count.
  #set ($firstHalfIntervalSize = $mathtool.div($mathtool.sub($countAverage, $minCount), $levelsHalf))
  #set ($secondHalfIntervalSize = $mathtool.div($mathtool.sub($maxCount, $countAverage), $levelsHalf))
  ##
  ## Use a sorted map
  #set ($popularityMap = $collectionstool.getSortedMap())
  #set ($previousPopularityMax = $minCount)
  #set ($intervalSize = $firstHalfIntervalSize)
  #set ($halfPassed = false)
  #foreach ($popularityLevel in $popularityLevels)
    #if ($velocityCount > $levelsHalf && !$halfPassed)
      #set ($intervalSize = $secondHalfIntervalSize)
      #set ($halfPassed = true)
    #end
    #set ($currentPopularityMax = $mathtool.add($previousPopularityMax, $intervalSize))
    ##
    ## round the threshold
    #set ($threshold = $mathtool.roundTo(1, $currentPopularityMax))
    #set ($discard = $popularityMap.put($threshold, $popularityLevel))
    #set ($previousPopularityMax = $currentPopularityMax)
  #end
#end
##
## Display tag cloud.
{{html}}
#if ($tagCount.size() > 0)
  <ol class="tagCloud">
  #foreach ($tagEntry in $tagCount.entrySet())
    #foreach ($popularityEntry in $popularityMap.entrySet())
      #if ($popularityEntry.Key >= $tagEntry.Value)
        #set ($liClass = $popularityEntry.Value)
        #break
      #end
    #end
    <li class="$liClass">
      <a class="tag" href="$xwiki.getURL('Main.Tags', 'view', "do=viewTag&amp;tag=$escapetool.url($tagEntry.Key)")" title="$services.localization.render('xe.tag.tooltip', [$tagEntry.Value])">$escapetool.xml($tagEntry.Key)</a>
    </li>
  #end
  </ol>
#else
  <p class="noitems">
  #if("$!tagCloudSpace" == "")
    $services.localization.render('xe.tag.notags')
  #else
    $services.localization.render('xe.tag.notagsforspace', ["$tagCloudSpace"])
  #end
  </p>
#end
{{/html}}]
	at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:139)
	at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:52)
	at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:286)
	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:272)
	at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183)
	at org.xwiki.rendering.internal.macro.wikibridge.DefaultWikiMacro.execute(DefaultWikiMacro.java:257)
	at org.xwiki.rendering.internal.macro.wikibridge.DefaultWikiMacro.execute(DefaultWikiMacro.java:62)
	at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:272)
	at org.xwiki.rendering.internal.executor.MacroContentExecutor.executeContent(MacroContentExecutor.java:77)
	at org.xwiki.rendering.internal.executor.MacroContentExecutor.execute(MacroContentExecutor.java:70)
	at org.xwiki.rendering.internal.executor.MacroContentExecutor.execute(MacroContentExecutor.java:45)
	at org.xwiki.rendering.internal.macro.dashboard.DefaultGadgetSource.renderGadgetProperty(DefaultGadgetSource.java:201)
	at org.xwiki.rendering.internal.macro.dashboard.DefaultGadgetSource.prepareGadgets(DefaultGadgetSource.java:188)
	at org.xwiki.rendering.internal.macro.dashboard.DefaultGadgetSource.getGadgets(DefaultGadgetSource.java:140)
	at org.xwiki.rendering.internal.macro.dashboard.DashboardMacro.execute(DashboardMacro.java:181)
	at org.xwiki.rendering.internal.macro.dashboard.DashboardMacro.execute(DashboardMacro.java:57)
	at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:272)
	at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183)
	at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:95)
	at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:263)
	at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:133)
	at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:58)
	at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96)
	at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39)
	at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123)
	at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52)
	at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68)
	at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42)
	at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1160)
	at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1201)
	at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1178)
	at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1209)
	at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:713)
	at sun.reflect.GeneratedMethodAccessor431.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	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.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.SimpleNode.render(SimpleNode.java:342)
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.xwiki.velocity.introspection.TryCatchDirective.render(TryCatchDirective.java:87)
	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.evaluateInternal(DefaultVelocityEngine.java:259)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
	at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:361)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.evaluateContent(InternalTemplateManager.java:806)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:682)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.lambda$renderFromSkin$0(InternalTemplateManager.java:657)
	at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:85)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:656)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:635)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:621)
	at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:78)
	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2174)
	at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:2152)
	at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:969)
	at sun.reflect.GeneratedMethodAccessor248.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
	at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
	at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:361)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.evaluateContent(InternalTemplateManager.java:806)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:682)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.lambda$renderFromSkin$0(InternalTemplateManager.java:657)
	at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:85)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:656)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:635)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:621)
	at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:78)
	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2174)
	at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:2152)
	at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:969)
	at sun.reflect.GeneratedMethodAccessor248.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
	at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
	at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:361)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.evaluateContent(InternalTemplateManager.java:806)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:682)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.lambda$renderFromSkin$0(InternalTemplateManager.java:657)
	at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:85)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:656)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:635)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:621)
	at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:78)
	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2174)
	at com.xpn.xwiki.export.html.HtmlPackager.evaluateDocumentContent(HtmlPackager.java:288)
	at com.xpn.xwiki.export.html.HtmlPackager.renderDocument(HtmlPackager.java:262)
	at com.xpn.xwiki.export.html.HtmlPackager.renderDocuments(HtmlPackager.java:317)
	at com.xpn.xwiki.export.html.HtmlPackager.export(HtmlPackager.java:390)
	at com.xpn.xwiki.web.ExportAction.exportHTML(ExportAction.java:134)
	at com.xpn.xwiki.web.ExportAction.render(ExportAction.java:85)
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:446)
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:209)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:112)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:127)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:134)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)
Caused by: org.xwiki.velocity.XWikiVelocityException: Failed to evaluate content with id [xwiki:Dashboard.WebHome]
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:227)
	at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:361)
	at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:131)
	... 178 more
Caused by: org.apache.velocity.exception.MethodInvocationException: Invocation of method 'getTagCount' in  class com.xpn.xwiki.plugin.tag.TagPluginApi threw exception com.xpn.xwiki.XWikiException: Error number 0 in 3: Failed to get tag count for query [select elements(prop.list) from XWikiDocument as doc, BaseObject as tagobject, DBStringListProperty as prop where tagobject.name=doc.fullName and tagobject.className='XWiki.TagClass' and tagobject.id=prop.id.id and prop.id.name='tags' and doc.translation=0], with parameters [[]] at 222:xwiki:Dashboard.WebHome[line 26, column 30]
	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.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.evaluateInternal(DefaultVelocityEngine.java:259)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
	... 180 more
Caused by: com.xpn.xwiki.XWikiException: Error number 0 in 3: Failed to get tag count for query [select elements(prop.list) from XWikiDocument as doc, BaseObject as tagobject, DBStringListProperty as prop where tagobject.name=doc.fullName and tagobject.className='XWiki.TagClass' and tagobject.id=prop.id.id and prop.id.name='tags' and doc.translation=0], with parameters [[]]
	at com.xpn.xwiki.plugin.tag.TagQueryUtils.getTagCountForQuery(TagQueryUtils.java:133)
	at com.xpn.xwiki.plugin.tag.TagPlugin.getTagCountForQuery(TagPlugin.java:289)
	at com.xpn.xwiki.plugin.tag.TagPlugin.getTagCountForQuery(TagPlugin.java:271)
	at com.xpn.xwiki.plugin.tag.TagPlugin.getTagCount(TagPlugin.java:184)
	at com.xpn.xwiki.plugin.tag.TagPlugin.getTagCount(TagPlugin.java:214)
	at com.xpn.xwiki.plugin.tag.TagPluginApi.getTagCount(TagPluginApi.java:92)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	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)
	... 190 more
Caused by: org.xwiki.query.QueryException: Exception while executing query. Query statement = [select elements(prop.list) from XWikiDocument as doc, BaseObject as tagobject, DBStringListProperty as prop where tagobject.name=doc.fullName and tagobject.className='XWiki.TagClass' and tagobject.id=prop.id.id and prop.id.name='tags' and doc.translation=0]
	at com.xpn.xwiki.store.hibernate.query.HqlQueryExecutor.execute(HqlQueryExecutor.java:195)
	at org.xwiki.query.internal.DefaultQueryExecutorManager.execute(DefaultQueryExecutorManager.java:72)
	at org.xwiki.query.internal.DefaultQuery.execute(DefaultQuery.java:296)
	at com.xpn.xwiki.plugin.tag.TagQueryUtils.getTagCountForQuery(TagQueryUtils.java:130)
	... 202 more
Caused by: com.xpn.xwiki.XWikiException: Error number 0 in 3: Exception while hibernate execute
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.execute(XWikiHibernateBaseStore.java:910)
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.executeRead(XWikiHibernateBaseStore.java:971)
	at com.xpn.xwiki.store.hibernate.query.HqlQueryExecutor.execute(HqlQueryExecutor.java:177)
	... 205 more
Caused by: org.hibernate.exception.JDBCConnectionException: Cannot open connection
	at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:99)
	at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
	at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52)
	at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:449)
	at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
	at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:160)
	at org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:81)
	at org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1473)
	at com.xpn.xwiki.internal.store.hibernate.HibernateStore.beginTransaction(HibernateStore.java:466)
	at com.xpn.xwiki.internal.store.hibernate.HibernateStore.beginTransaction(HibernateStore.java:422)
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.beginTransaction(XWikiHibernateBaseStore.java:624)
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.execute(XWikiHibernateBaseStore.java:903)
	... 207 more
Caused by: org.postgresql.util.PSQLException: The connection attempt failed.
	at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:272)
	at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:52)
	at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:216)
	at org.postgresql.Driver.makeConnection(Driver.java:404)
	at org.postgresql.Driver.connect(Driver.java:272)
	at org.apache.commons.dbcp2.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:39)
	at org.apache.commons.dbcp2.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:256)
	at org.apache.commons.pool2.impl.GenericObjectPool.create(GenericObjectPool.java:868)
	at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:435)
	at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:363)
	at org.apache.commons.dbcp2.PoolingDataSource.getConnection(PoolingDataSource.java:134)
	at org.apache.commons.dbcp2.BasicDataSource.getConnection(BasicDataSource.java:1533)
	at com.xpn.xwiki.store.DBCPConnectionProvider.getConnection(DBCPConnectionProvider.java:248)
	at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
	... 215 more
Caused by: java.net.UnknownHostException: postgres-xwiki
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
	at java.net.Socket.connect(Socket.java:589)
	at org.postgresql.core.PGStream.<init>(PGStream.java:61)
	at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:144)
	... 228 more