Calendar no longer displaying dates for individual events

Diagnostic :
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Diagnostics report
HEALTH CHECK
PHP 5.6.33 is up to date
MySQL 5.5.59-0+deb7u1-log is up to date
Image processing available
SUMMARY INFORMATION
Perch: 2.8.18, PHP: 5.6.33, MySQL: mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $, with PDO
Server OS: Linux, cgi-fcgi
Installed apps: content (2.8.18), assets (2.8.18), categories (2.8.18), perch_events (1.9.2)
App runtimes: <?php $apps_list = array( 'content', 'categories', 'perch_events', );
PERCH_LOGINPATH: /perch
PERCH_PATH: /homepages/3/d162072124/htdocs/stroudcong/website/perch
PERCH_CORE: /homepages/3/d162072124/htdocs/stroudcong/website/perch/core
PERCH_RESFILEPATH: /homepages/3/d162072124/htdocs/stroudcong/website/perch/resources
Image manipulation: GD
PHP limits: Max upload 64M, Max POST 64M, Memory: 256M, Total max file upload: 64M
Resource folder writeable: Yes
HTTP_HOST: www.stroudcongchurch.org.uk
DOCUMENT_ROOT: /kunden/homepages/3/d162072124/htdocs/stroudcong/website
REQUEST_URI: /perch/core/settings/diagnostics/
SCRIPT_NAME: /perch/core/settings/diagnostics/index.php

This website used to display event dates in the right hand column entitled 'Services' Whilst it still shows the months it does not list the individual event dates themselves. I am not sure what has changed and when this stopped working but hope you can advise, thanks:

Website

[https://www.stroudcongchurch.org.uk/index.html](https://www.stroudcongchurch.org.uk/index.html)

Code on page

<div class="sidebar_latest_blog_posts">
                <h2>Services </h2>
                <?php perch_events_listing(); ?>
              </div>

Code in event listing - calendar.html

<h3><perch:events id="selected_month" format="%B %Y" /></h3>



<perch:if exists="body">
<ul class="calendar">
    <perch:events id="body" encode="false" />
</ul>
<perch:else />

</perch:if>

<h3>Calendar by Month</h3>

<ul class="calendar-nav">
    <li><a class="paging-prev" href="?d=<perch:events id="prev_month" format="Y-m" />"> <perch:events id="prev_month" format="%b %Y" /></a></li>
    <li><a href="?d=<perch:events id="current_month" format="Y-m" />"> <perch:events id="selected_month" format="%b %Y" /></a></li>
    <li><a class="paging-next" href="?d=<perch:events id="next_month" format="Y-m" />"><perch:events id="next_month" format="%b %Y" /> </a></li>
</ul>

Thanks karen