analytics:reportChart 标签在站点上使用时报错

Question

analytics:reportChart 嵌入Visualforce时报这个错误, Force.com Site 站点中才会报错, 一般的 Visualforce 中不会报错

Visualforce：

<apex:page controller="VoteResultController" showHeader="false" standardStylesheets="false">
<div style="text-align:center;">
<analytics:reportChart reportId="{!reportId}" size="small" filter="{!charFilter}" hideOnError="false">
</analytics:reportChart>
</div>
</apex:page>

Apex Controller：

public class VoteResultController 
{
    public String reportId{get;set;}
    public String charFilter{get;set;}
    
    public VoteResultController()
    {
        //reportId = '00Op0000000OvYX';
        List <Report> reportList = [SELECT Id,DeveloperName 
                                    FROM Report 
                                    where DeveloperName = 'Survey_repotr'
                                    And Name='投票结果'];
        if(!reportList.isEmpty())
        {
            reportId = (String)reportList.get(0).get('Id');            
        }                             
        charFilter = '[{column:\'Survey__c.Id\', operator:\'equals\',value:\'a38p00000000BWP\'}]';
        system.debug('报表的ID'+ reportId);
        system.debug('筛选条件'+ charFilter);
    }
}