Index: openacs-4/packages/calendar/www/cal-item-delete-confirm.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/calendar/www/cal-item-delete-confirm.tcl,v
diff -u -r1.13 -r1.13.2.1
--- openacs-4/packages/calendar/www/cal-item-delete-confirm.tcl	7 Aug 2017 23:48:05 -0000	1.13
+++ openacs-4/packages/calendar/www/cal-item-delete-confirm.tcl	7 Feb 2022 15:01:43 -0000	1.13.2.1
@@ -15,7 +15,14 @@
 
 auth::require_login
 
-calendar::item::get -cal_item_id $cal_item_id -array cal_item
+try {
+    calendar::item::get \
+        -cal_item_id $cal_item_id \
+        -array cal_item
+} on error {
+    ns_returnnotfound
+    ad_script_abort
+}
 
 # no time?
 set cal_item(no_time_p) [expr {!$cal_item(time_p)}]