diff -r 3804332c204e -r ee2463fbf794 mod_default_bookmarks/mod_default_bookmarks.lua
--- a/mod_default_bookmarks/mod_default_bookmarks.lua	Fri Jan 07 19:55:03 2022 +0100
+++ b/mod_default_bookmarks/mod_default_bookmarks.lua	Fri Jan 07 23:25:33 2022 +0100
@@ -53,8 +53,10 @@
 	local function on_bookmarks_empty(event)
 		local session = event.session;
 		local bookmarks = get_default_bookmarks(session.username);
-		if bookmarks then
+		if bookmarks.publish_to_pep then
 			mod_bookmarks.publish_to_pep(session.full_jid, bookmarks);
+		else
+			module:log("error", "Method for publishing legacy bookmarks not exposed by mod_bookmarks")
 		end
 	end
 	module:hook("bookmarks/empty", on_bookmarks_empty);