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Justin RuckJustin Ruck 

Salesforce Classic VF Page Comes Up Blank in Lightning Experience

I have a VF page that works just find in Classic, but when I go to its tab in Lightning Experience, I just get a blank page.  Any ideas as to why this may be happening?
 
<apex:page controller="VirtualReportController" title="Metrie Reports" readonly="true">
    <apex:sectionHeader title="Personalized Salesforce.com Reports" subtitle="{!UserName}">
        <apex:pageBlock >
            <apex:outputText value="Your profile has a reporting level of {0} giving you access to the following reports:">
                <apex:param value="{!reportLevel}"/>
            </apex:outputText>
            <br/><br/><br/>
            <table border="0">
                <apex:repeat value="{!ReportGroups}" var="group">
                    <tr>
                        <td colspan="2">
                            <b>{!group.Name}</b> - {!group.reportsCount} reports
                        </td>
                    </tr>
                    <tr/>
                    <apex:repeat value="{!group.reports}" var="r">
                        <tr>
                            <td width="30px"></td>
                            <td><apex:outputLink value="{!r.Url}" title="{!r.Description}">{!r.Name}</apex:outputLink></td>
                        </tr>
                    </apex:repeat>
                </apex:repeat>
            </table>
        </apex:pageBlock>
    </apex:sectionHeader>
</apex:page>

 
Best Answer chosen by Justin Ruck
Justin RuckJustin Ruck
I ran that technique, and didn't receive any errors.

All of a sudden, it's working today for the first time ever.  Strange.  

All Answers

KevinPKevinP
Justin,

there's nothing i see here that should cause that, but i'm wondering if it's a known issue? is it just this visual force page, or all of your classic vf tabs?

if it's just this one, you might try employing the technique talked about here: http://codefriar.com/2015/03/16/debugging-communities-with-visualforce/ in an effort to debug what's happening. (even if it's not a communities page.)
Justin RuckJustin Ruck
I ran that technique, and didn't receive any errors.

All of a sudden, it's working today for the first time ever.  Strange.  
This was selected as the best answer