Index: openacs-4/packages/xowiki/www/admin/portal-element-add.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/www/admin/portal-element-add.tcl,v
diff -u -N -r1.17.2.3 -r1.17.2.4
--- openacs-4/packages/xowiki/www/admin/portal-element-add.tcl	7 Feb 2020 08:44:05 -0000	1.17.2.3
+++ openacs-4/packages/xowiki/www/admin/portal-element-add.tcl	15 Oct 2020 08:50:43 -0000	1.17.2.4
@@ -20,7 +20,7 @@
   #
   ad_return_error \
       [_ xowiki.portlet_page_does_not_exist_error_short] \
-      [_ xowiki.portlet_page_does_not_exist_error_long $page_name]
+      [_ xowiki.portlet_page_does_not_exist_error_long [list page_name $page_name]]
   ad_script_abort
 
 } else {