mqtt2prom/run

@@ -191,7 +191,7 @@ function precheck(Message $message): bool
     }
 
     foreach (array_keys($payload) as $key) {
-        if (!in_array($key, ["name", "value", "labels", "valid_seconds"])) {
+        if (!in_array($key, ["name", "value", "labels","valid_until"])) {
             error("Unknown key: $key");
             return false;
         }