--- a/cubicweb/pyramid/debug_toolbar_templates/cw.dbtmako	Wed Mar 18 11:30:05 2020 +0100
+++ b/cubicweb/pyramid/debug_toolbar_templates/cw.dbtmako	Thu Mar 12 15:37:59 2020 +0100
@@ -1,3 +1,5 @@
+% if controller:
+
 <h3>Controller</h3>
 
 <table class="table table-striped table-condensed">
@@ -61,3 +63,6 @@
     <li><a href="/cwsource">data sources</a></li>
     <li><a href="/siteinfo">Site information</a></li>
 </ul>
+% else:
+<p>No controller store got collected.</p>
+% endif