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SOLVED

data-sly-call: expression evaluates to null

Avatar

Level 3

Hi all,

After migrating from 6.0 to 6.2 we are facing issues in opening some pages. They are being opened with an error:

Error during include of component '/apps/xyz/components/page/groupsmapping'

Error Message:

org.apache.sling.api.scripting.ScriptEvaluationException: org.apache.sling.scripting.sightly.SightlyException: data-sly-call: expression evaluates to null

Below is the HTML for it

groupsmapping.html:

 


    <head data-sly-use.clientLib="${'/apps/acs-commons/sightly/templates/dhlm.html'}"  data-sly-use.clientLib="${'/libs/granite/sightly/templates/clientlib.html'}">
        <div data-sly-include="/libs/wcm/core/components/init/init.jsp" data-sly-unwrap></div>
        <style data-sly-call="${clientLib.head @ mode='all'}" data-sly-unwrap></style>
        <style data-sly-call="${xyz.vendor @ mode='all'}" data-sly-unwrap></style>
    </head>
    <body>

        <div data-sly-resource="${ @path='groupsmapping', resourceType='xyz/components/content/groupsmappingconfig'}" data-sly-unwrap></div>
    </body>
</html>

1 Accepted Solution

Avatar

Correct answer by
Level 3

I just commented out the data-sly-call tags and the pages started rendering. Need to debug more for root cause.

View solution in original post

13 Replies

Avatar

Employee

I see twice a declaration of 'clientLib', but no declaration for 'xyz' or 'dhlm'

Avatar

Level 3

Hello,

We also had similar issues going from 6.1 to 6.2. The issue was with some of our custom components / views, and the dev team had to update their code package to be compatible. Only pages using specific components or views had the issue. I would recommend turning on additional logging if the existing logs don't have enough detail to know which component / view is causing the issue, or you can't narrow it down otherwise. 

Andrew

Avatar

Employee

Can you create a sample so we can help you further?

Avatar

Level 2

We have a similar problem while migrating from AEM 6.1 JSP to Sightly in 6.2 - It is a simple call to the clientLib - Keeps on saying error in line no 1 in page.html

"data-sly-call: expression evaluates to null"

Here is my headlibs.html

<sly data-sly-use.clientLib="/libs/granite/sightly/templates/clientlib.html" 

    data-sly-call="${clientLib.css @ categories='app.header'}"/>

Can you please help?

Avatar

Employee

Are all components failing (like Geometrixx)?

Can try to split the markup into two lines?

Avatar

Correct answer by
Level 3

I just commented out the data-sly-call tags and the pages started rendering. Need to debug more for root cause.

Avatar

Level 2

Worked for us. There was an error in our UI engine. The CSS file that get some generated was empty. Works fine now. Just try loading some other CSS file and assign to a tag. We traced the error back to the CSS file

Avatar

Level 2

you should follow the steps being taken inside the article ...Probably you should call the client lib as follows -

<sly data-sly-call="${clientLib.css @ categories='myproject.all'}" data-sly-unwrap/>

<sly data-sly-call="${clientLib.js @ categories='myproject.all'}" data-sly-unwrap/>

AEM Client Libraries explained by example

Avatar

Level 5

I am having the same problem, but components are getting loaded perfectly on the page. The component which might be causing the issue doesn't have tag data-sly-call. No clue, why I am seeing error in log file. Below is the complete log.

 

Thank you

Rashid

08.10.2021 17:38:33.272 *ERROR* [0:0:0:0:0:0:0:1 [1633694902417] GET /content/abc/xyz/en/press-releases.html HTTP/1.1] com.day.cq.wcm.core.impl.WCMDeveloperModeFilter Error during include of SlingRequestPathInfo: path='/content/abc/xyz/en/press-releases/jcr:content', selectorString='page', extension='html', suffix='null'
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: data-sly-call: expression evaluates to null.
	at org.apache.sling.scripting.core.impl.DefaultSlingScript.service(DefaultSlingScript.java:510) [org.apache.sling.scripting.core:2.0.56]
	at org.apache.sling.engine.impl.request.RequestData.service(RequestData.java:552) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.filter.SlingComponentFilterChain.render(SlingComponentFilterChain.java:44) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:82) [org.apache.sling.engine:2.6.18]
	at com.day.cq.wcm.core.impl.WCMDeveloperModeFilter.doFilterWithErrorHandling(WCMDeveloperModeFilter.java:164) [com.day.cq.wcm.cq-wcm-core:5.12.102]
	at com.day.cq.wcm.core.impl.WCMDeveloperModeFilter.doFilter(WCMDeveloperModeFilter.java:135) [com.day.cq.wcm.cq-wcm-core:5.12.102]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.day.cq.wcm.core.impl.WCMDebugFilter.doFilterWithErrorHandling(WCMDebugFilter.java:192) [com.day.cq.wcm.cq-wcm-core:5.12.102]
	at com.day.cq.wcm.core.impl.WCMDebugFilter.doFilter(WCMDebugFilter.java:159) [com.day.cq.wcm.cq-wcm-core:5.12.102]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.adobe.acs.commons.granite.ui.components.impl.include.IncludeDecoratorFilterImpl.doFilter(IncludeDecoratorFilterImpl.java:92) [com.adobe.acs.acs-aem-commons-bundle:4.9.2]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.day.cq.wcm.core.impl.WCMComponentFilter.doFilter(WCMComponentFilter.java:278) [com.day.cq.wcm.cq-wcm-core:5.12.102]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.day.cq.wcm.core.impl.page.PageLockFilter.doFilter(PageLockFilter.java:91) [com.day.cq.wcm.cq-wcm-core:5.12.102]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.day.cq.personalization.impl.TargetComponentFilter.doFilter(TargetComponentFilter.java:94) [com.day.cq.cq-personalization:5.12.38]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.adobe.granite.csrf.impl.CSRFFilter.doFilter(CSRFFilter.java:217) [com.adobe.granite.csrf:1.0.20.CQ650-B0002]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.SlingRequestProcessorImpl.processComponent(SlingRequestProcessorImpl.java:282) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.SlingRequestProcessorImpl.dispatchRequest(SlingRequestProcessorImpl.java:322) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.request.SlingRequestDispatcher.dispatch(SlingRequestDispatcher.java:211) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.request.SlingRequestDispatcher.include(SlingRequestDispatcher.java:104) [org.apache.sling.engine:2.6.18]
	at com.day.cq.wcm.core.impl.WCMComponentFilter$ForwardRequestDispatcher.include(WCMComponentFilter.java:516) [com.day.cq.wcm.cq-wcm-core:5.12.102]
	at org.apache.jsp.libs.cq.Page.Page_jsp._jspService(Page_jsp.java:117)
	at org.apache.sling.scripting.jsp.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) [org.apache.sling.scripting.jsp:2.3.4]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:725) [org.apache.felix.http.servlet-api:1.1.2]
	at org.apache.sling.scripting.jsp.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:502) [org.apache.sling.scripting.jsp:2.3.4]
	at org.apache.sling.scripting.jsp.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:449) [org.apache.sling.scripting.jsp:2.3.4]
	at org.apache.sling.scripting.jsp.JspScriptEngineFactory.callJsp(JspScriptEngineFactory.java:342) [org.apache.sling.scripting.jsp:2.3.4]
	at org.apache.sling.scripting.jsp.JspScriptEngineFactory.access$100(JspScriptEngineFactory.java:97) [org.apache.sling.scripting.jsp:2.3.4]
	at org.apache.sling.scripting.jsp.JspScriptEngineFactory$JspScriptEngine.eval(JspScriptEngineFactory.java:603) [org.apache.sling.scripting.jsp:2.3.4]
	at org.apache.sling.scripting.core.impl.DefaultSlingScript.call(DefaultSlingScript.java:388) [org.apache.sling.scripting.core:2.0.56]
	at org.apache.sling.scripting.core.impl.DefaultSlingScript.eval(DefaultSlingScript.java:184) [org.apache.sling.scripting.core:2.0.56]
	at org.apache.sling.scripting.core.impl.DefaultSlingScript.service(DefaultSlingScript.java:491) [org.apache.sling.scripting.core:2.0.56]
	at org.apache.sling.engine.impl.request.RequestData.service(RequestData.java:552) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.filter.SlingComponentFilterChain.render(SlingComponentFilterChain.java:44) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:82) [org.apache.sling.engine:2.6.18]
	at com.day.cq.wcm.core.impl.WCMDebugFilter.doFilter(WCMDebugFilter.java:156) [com.day.cq.wcm.cq-wcm-core:5.12.102]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.day.cq.wcm.core.impl.WCMComponentFilter.filterRootInclude(WCMComponentFilter.java:375) [com.day.cq.wcm.cq-wcm-core:5.12.102]
	at com.day.cq.wcm.core.impl.WCMComponentFilter.doFilter(WCMComponentFilter.java:190) [com.day.cq.wcm.cq-wcm-core:5.12.102]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.day.cq.wcm.core.impl.page.PageLockFilter.doFilter(PageLockFilter.java:91) [com.day.cq.wcm.cq-wcm-core:5.12.102]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.day.cq.personalization.impl.TargetComponentFilter.doFilter(TargetComponentFilter.java:94) [com.day.cq.cq-personalization:5.12.38]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.SlingRequestProcessorImpl.processComponent(SlingRequestProcessorImpl.java:282) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.filter.RequestSlingFilterChain.render(RequestSlingFilterChain.java:49) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:82) [org.apache.sling.engine:2.6.18]
	at com.day.cq.dam.core.impl.assetlinkshare.AdhocAssetShareAuthHandler.doFilter(AdhocAssetShareAuthHandler.java:437) [com.day.cq.dam.cq-dam-core:5.12.194]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:78) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:78) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:78) [org.apache.sling.engine:2.6.18]
	at com.day.cq.wcm.core.impl.warp.TimeWarpFilter.doFilter(TimeWarpFilter.java:109) [com.day.cq.wcm.cq-wcm-core:5.12.102]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.adobe.cq.social.ugcbase.security.impl.SaferSlingPostServlet.doFilter(SaferSlingPostServlet.java:114) [com.adobe.cq.social.cq-social-ugcbase-impl:2.5.2]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:78) [org.apache.sling.engine:2.6.18]
	at com.day.cq.dam.core.impl.servlet.ActivityRecordHandler.doFilter(ActivityRecordHandler.java:141) [com.day.cq.dam.cq-dam-core:5.12.194]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.adobe.granite.rest.impl.servlet.ApiResourceFilter.doFilter(ApiResourceFilter.java:70) [com.adobe.granite.rest.api:1.1.16]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.adobe.granite.requests.logging.impl.RequestLoggerImpl.doFilter(RequestLoggerImpl.java:134) [com.adobe.granite.requests.logging:1.0.20]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.adobe.granite.rest.assets.impl.AssetContentDispositionFilter.doFilter(AssetContentDispositionFilter.java:96) [com.adobe.granite.rest.assets:1.0.58]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.day.cq.wcm.core.impl.AuthoringUIModeServiceImpl.doFilter(AuthoringUIModeServiceImpl.java:372) [com.day.cq.wcm.cq-wcm-core:5.12.102]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.day.cq.wcm.mobile.core.impl.redirect.RedirectFilter.doFilter(RedirectFilter.java:248) [com.day.cq.wcm.cq-wcm-mobile-core:5.11.10]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.adobe.cq.wcm.core.extensions.amp.internal.AmpModeForwardFilter.doFilter(AmpModeForwardFilter.java:84) [com.adobe.cq.core.wcm.components.extensions.amp:2.16.4]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.debug.RequestProgressTrackerLogFilter.doFilter(RequestProgressTrackerLogFilter.java:107) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.adobe.cq.social.commons.cors.CORSAuthenticationFilter.doFilter(CORSAuthenticationFilter.java:91) [com.adobe.cq.social.cq-social-commons:1.10.74]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.day.cq.wcm.foundation.forms.FormsHandlingServletHelper.handleFilter(FormsHandlingServletHelper.java:226) [com.day.cq.wcm.cq-wcm-foundation:5.12.20]
	at com.day.cq.wcm.foundation.forms.impl.FormsHandlingServlet.doFilter(FormsHandlingServlet.java:138) [com.day.cq.wcm.cq-wcm-foundation:5.12.20]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.adobe.granite.optout.impl.OptOutFilter.doFilter(OptOutFilter.java:76) [com.adobe.granite.optout:1.0.0]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.day.cq.wcm.foundation.forms.FormsHandlingServletHelper.handleFilter(FormsHandlingServletHelper.java:226) [com.day.cq.wcm.cq-wcm-foundation:5.12.20]
	at com.adobe.cq.wcm.core.components.internal.servlets.CoreFormHandlingServlet.doFilter(CoreFormHandlingServlet.java:123) [com.adobe.cq.core.wcm.components.core:2.16.4]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.day.cq.wcm.core.impl.WCMRequestFilter.doFilter(WCMRequestFilter.java:90) [com.day.cq.wcm.cq-wcm-core:5.12.102]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.adobe.cq.history.impl.HistoryRequestFilter.doFilter(HistoryRequestFilter.java:122) [com.adobe.cq.cq-history:5.10.6]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.adobe.cq.mcm.campaign.servlets.CampaignCopyTracker.doFilter(CampaignCopyTracker.java:100) [com.day.cq.mcm.cq-mcm-campaign:1.3.12]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.rewriter.impl.RewriterFilter.doFilter(RewriterFilter.java:87) [org.apache.sling.rewriter:1.2.2]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.adobe.granite.httpcache.impl.InnerCacheFilter.doFilter(InnerCacheFilter.java:81) [com.adobe.granite.httpcache.core:1.0.8]
	at com.adobe.granite.httpcache.impl.InnerCacheFilter.doFilter(InnerCacheFilter.java:60) [com.adobe.granite.httpcache.core:1.0.8]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.i18n.impl.I18NFilter.doFilter(I18NFilter.java:131) [org.apache.sling.i18n:2.5.14]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at com.adobe.granite.csrf.impl.CSRFFilter.doFilter(CSRFFilter.java:217) [com.adobe.granite.csrf:1.0.20.CQ650-B0002]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.security.impl.ContentDispositionFilter.doFilter(ContentDispositionFilter.java:152) [org.apache.sling.security:1.1.16]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:78) [org.apache.sling.engine:2.6.18]
	at com.adobe.granite.resourceresolverhelper.impl.ResourceResolverHelperImpl.doFilter(ResourceResolverHelperImpl.java:83) [com.adobe.granite.resourceresolverhelper:1.0.4]
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:72) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.SlingRequestProcessorImpl.doProcessRequest(SlingRequestProcessorImpl.java:151) [org.apache.sling.engine:2.6.18]
	at org.apache.sling.engine.impl.SlingMainServlet.service(SlingMainServlet.java:244) [org.apache.sling.engine:2.6.18]
	at org.apache.felix.http.base.internal.handler.ServletHandler.handle(ServletHandler.java:123) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:86) [org.apache.felix.http.jetty:4.0.8]
	at com.adobe.granite.license.impl.LicenseCheckFilter.doFilter(LicenseCheckFilter.java:308) [com.adobe.granite.license:1.2.10]
	at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:142) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:81) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.sling.i18n.impl.I18NFilter.doFilter(I18NFilter.java:131) [org.apache.sling.i18n:2.5.14]
	at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:142) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:81) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.sling.featureflags.impl.FeatureManager.doFilter(FeatureManager.java:116) [org.apache.sling.featureflags:1.2.2]
	at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:142) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:81) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.sling.engine.impl.log.RequestLoggerFilter.doFilter(RequestLoggerFilter.java:72) [org.apache.sling.engine:2.6.18]
	at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:142) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:81) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.sling.engine.impl.parameters.RequestParameterSupportConfigurer.doFilter(RequestParameterSupportConfigurer.java:63) [org.apache.sling.engine:2.6.18]
	at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:142) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:81) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.felix.http.base.internal.dispatch.Dispatcher$1.doFilter(Dispatcher.java:146) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.felix.http.base.internal.whiteboard.WhiteboardManager$2.doFilter(WhiteboardManager.java:1002) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.sling.security.impl.ReferrerFilter.doFilter(ReferrerFilter.java:326) [org.apache.sling.security:1.1.16]
	at org.apache.felix.http.base.internal.handler.PreprocessorHandler.handle(PreprocessorHandler.java:136) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.felix.http.base.internal.whiteboard.WhiteboardManager$2.doFilter(WhiteboardManager.java:1008) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.felix.http.sslfilter.internal.SslFilter.doFilter(SslFilter.java:97) [org.apache.felix.http.sslfilter:1.2.6]
	at org.apache.felix.http.base.internal.handler.PreprocessorHandler.handle(PreprocessorHandler.java:136) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.felix.http.base.internal.whiteboard.WhiteboardManager$2.doFilter(WhiteboardManager.java:1008) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.felix.http.base.internal.whiteboard.WhiteboardManager.invokePreprocessors(WhiteboardManager.java:1012) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.felix.http.base.internal.dispatch.Dispatcher.dispatch(Dispatcher.java:91) [org.apache.felix.http.jetty:4.0.8]
	at org.apache.felix.http.base.internal.dispatch.DispatcherServlet.service(DispatcherServlet.java:49) [org.apache.felix.http.jetty:4.0.8]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:725) [org.apache.felix.http.servlet-api:1.1.2]
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:873) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:542) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1701) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1668) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:220) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.server.Server.handle(Server.java:502) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:370) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:267) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765) [org.apache.felix.http.jetty:4.0.8]
	at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683) [org.apache.felix.http.jetty:4.0.8]
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.RuntimeException: data-sly-call: expression evaluates to null.
	at org.apache.sling.scripting.sightly.render.RenderUnit.callUnit(RenderUnit.java:72) [org.apache.sling.scripting.sightly.runtime:1.1.0.1_4_0]
	at org.apache.sling.scripting.sightly.apps.core.wcm.components.page.v1.page.page_html.render(page_html.java:93)
	at org.apache.sling.scripting.sightly.render.RenderUnit.render(RenderUnit.java:50) [org.apache.sling.scripting.sightly.runtime:1.1.0.1_4_0]
	at org.apache.sling.scripting.sightly.impl.engine.SightlyCompiledScript.eval(SightlyCompiledScript.java:60) [org.apache.sling.scripting.sightly:1.1.2.1_4_0]
	at org.apache.sling.scripting.core.impl.DefaultSlingScript.call(DefaultSlingScript.java:386) [org.apache.sling.scripting.core:2.0.56]
	at org.apache.sling.scripting.core.impl.DefaultSlingScript.eval(DefaultSlingScript.java:184) [org.apache.sling.scripting.core:2.0.56]
	at org.apache.sling.scripting.core.impl.DefaultSlingScript.service(DefaultSlingScript.java:491) [org.apache.sling.scripting.core:2.0.56]
	... 165 common frames omitted