--- a/mod_http_admin_api/mod_http_admin_api.lua	Fri Jan 12 18:21:08 2024 +0000
+++ b/mod_http_admin_api/mod_http_admin_api.lua	Sat Jan 13 12:03:15 2024 +0000
@@ -748,7 +748,7 @@
 	for _, metric in mf:iter_metrics() do
 		sum = sum + metric.value;
 	end
-	return sum;
+	return (sum == sum) and sum or nil; -- Filter out nan
 end
 
 local function get_server_metrics(event)