Handle deleted channels in sender

web/static/js/reminder_errors.js

@@ -30,6 +30,8 @@ document.addEventListener("paneLoad", (ev) => {
                     { zone: "UTC" }
                 );
                 newRow.querySelector(".reminderName").textContent = reminder.name;
+                newRow.querySelector(".reminderMessage").textContent =
+                    reminder.status_message;
                 newRow.querySelector(".reminderTime").textContent = statusTime
                     .toLocal()
                     .toLocaleString(luxon.DateTime.DATETIME_MED);