diff --git a/koha-tmpl/intranet-tmpl/prog/en/includes/doc-head-open.inc b/koha-tmpl/intranet-tmpl/prog/en/includes/doc-head-open.inc
index 0cafa59250..59e6d53ef7 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/includes/doc-head-open.inc
+++ b/koha-tmpl/intranet-tmpl/prog/en/includes/doc-head-open.inc
@@ -3,15 +3,22 @@
 
 [% USE Koha %]
 [% IF Koha.Preference('DumpTemplateVarsIntranet') %]
-    [% USE Stash %]
-    [% USE Dumper %]
-    <!--
-    [% FILTER replace('<!--', '<!- -') %]
-        [% FILTER replace('-->', '- ->') %]
-            [% Dumper.dump( Stash.stash() ) %]
+    [% TRY %]
+        [% USE Stash %]
+        [% USE Dumper %]
+        <!--
+        [% FILTER replace('<!--', '<!- -') %]
+            [% FILTER replace('-->', '- ->') %]
+                [% Dumper.dump( Stash.stash() ) %]
+            [% END %]
         [% END %]
+        -->
+    [% CATCH %]
+        <!--
+            DumpTemplateVarsIntranet is set to 'Do', but
+            Template::Plugin::Stash is not installed.
+        -->
     [% END %]
-    -->
 [% END %]
 
 [% IF ( bidi ) %]<html lang="[% lang %]" dir="[% bidi %]">[% ELSE %]<html lang="[% lang %]">[% END %]
diff --git a/koha-tmpl/opac-tmpl/bootstrap/en/includes/doc-head-open.inc b/koha-tmpl/opac-tmpl/bootstrap/en/includes/doc-head-open.inc
index 149cc1f54e..06e68a3688 100644
--- a/koha-tmpl/opac-tmpl/bootstrap/en/includes/doc-head-open.inc
+++ b/koha-tmpl/opac-tmpl/bootstrap/en/includes/doc-head-open.inc
@@ -3,15 +3,22 @@
 
 [% USE Koha %]
 [% IF Koha.Preference('DumpTemplateVarsOpac') %]
-    [% USE Stash %]
-    [% USE Dumper %]
-    <!--
-    [% FILTER replace('<!--', '<!- -') %]
-        [% FILTER replace('-->', '- ->') %]
-            [% Dumper.dump( Stash.stash() ) %]
+    [% TRY %]
+        [% USE Stash %]
+        [% USE Dumper %]
+        <!--
+        [% FILTER replace('<!--', '<!- -') %]
+            [% FILTER replace('-->', '- ->') %]
+                [% Dumper.dump( Stash.stash() ) %]
+            [% END %]
         [% END %]
+        -->
+    [% CATCH %]
+        <!--
+            DumpTemplateVarsOpac is set to 'Do', but
+            Template::Plugin::Stash is not installed.
+        -->
     [% END %]
-    -->
 [% END %]
 
 [% IF ( bidi ) %]<html lang="[% lang %]" dir="[% bidi %]" class="no-js">[% ELSE %]<html lang="[% lang %]" class="no-js">[% END %]