Created Apex class to show Case Tasks and Case Emails in chronological order on visualforce page. The problem is that I am not able to show fields on visualforce page, not sure where I am going wrong. Any help/pointers would be appreciated

Here is the Apex Class code

global with sharing class CaseEmailExtension {

  private final Case currentCase;

 public CaseEmailExtension(ApexPages.StandardController currentcase) {
    this.currentCase = (Case)currentcase.getRecord();
  }
  
    global class commoncontainer implements Comparable {

    public DateTime createdDate{get;set;}

    public String content{get;set;}
    
    global Integer compareTo(Object compareTo) {
        commoncontainer compareToEmp = (commoncontainer)compareTo;
        if (createddate== compareToEmp.createddate) return 0;
        if (createddate> compareToEmp.createddate) return 1;
        return -1;        
    }
  }

  public List<commoncontainer> getSortcommoncontainer(){
    List <commoncontainer> containerlist = new List<commoncontainer>();
    
    for(EmailMessage emailmsg : getsortEmails())
{
    CommonContainer cc=new CommonContainer();
    cc.createdDate=emailmsg.CreatedDate;
    cc.content='Subject:' + emailmsg.CreatedDate + 'From:' + emailmsg.FromAddress + 'To:' + emailmsg.ToAddress + 'BCC:' + emailmsg.BCCAddress + 'Subject:' + emailmsg.Subject + 'EmailBody:' + emailmsg.TextBody + 'CreatedBy:' + emailmsg.CreatedBy.Name;
    containerList.add(cc);
}

    for(Attachment att: getattachments())
{
    CommonContainer cc=new CommonContainer();
    cc.createdDate=att.CreatedDate;
    cc.content='Name:' + att.Name + 'Created By:' + att.CreatedBy.name;
    containerList.add(cc);
}

    for(Task task: gettask())
{
    CommonContainer cc=new CommonContainer();
    cc.createdDate=task.CreatedDate;
    cc.content='Assigned To:' + task.Who.Name + 'Created By:' + task.CreatedBy.name + 'Status:' + task.Status + 'Priority:' + task.Priority + 'Due Date:' + task.ActivityDate + 'Subject:' + task.Subject + 'Description' + task.Description;
    containerList.add(cc);
}
containerlist.sort(); 
   return containerlist; 
  }

public List<EmailMessage> getSortEmails(){
    List <EmailMessage> sortedEmails = new List<EmailMessage>();
    sortedEmails = [SELECT Id, FromAddress, ToAddress, BCCAddress, CreatedDate, Subject, HasAttachment, Incoming, TextBody, CreatedBy.Name  
            from EmailMessage where ParentId =: currentCase.Id 
            order by MessageDate DESC ];
    return sortedEmails;
  }

public List<Task> getTask() {
    List<Task> Task= new List<Task>();
    Task = [SELECT Id, Priority, Subject, Status, Description, CreatedDate, ActivityDate, CreatedBy.Name,Who.Name
            from Task order by CreatedDate DESC]; 
    return Task;  
  }
}

Here is the Visualforce Page code

<apex:page standardController="Case" showHeader="false" sidebar="false" title="Case Number: {!Case.CaseNumber}" extensions="CaseEmailExtension">
<apex:form >
<apex:pageBlock title="Case Number: {!Case.CaseNumber}">

<apex:pageBlockButtons location="top" >
            <apex:CommandButton value="Print" onclick="javascript:window.print(); return false"/>
            <apex:CommandButton value="Close" onclick="window.close(); return false;"/>
    </apex:pageBlockButtons>

<apex:repeat value="{!sortCommonContainer}" var="cc">

    <apex:pageblock >
    <apex:facet name="header">
        <apex:outputText value="{0,date,dd'.'MM'.'yyyy HH:mm:ss z}" style="font-weight:bold;font-style:italic;font-size:12px;float:left ">
        <apex:param value="{!cc.CreatedDate}" />
        </apex:outputText>
        </apex:facet>
        <td width="100%" align="left">
            <table cellpadding="2px">
                <tr>
                                                
                </tr>
            </table>
        </td>
                
          
        </apex:pageblock>
</apex:repeat>
</apex:form>
</apex:page>