Fix: Fix SQL GROUP BY error in daily/hourly summary aggregation - Use COALESCE in GROUP BY to handle NULL tariff amounts - Remove invalid is_active check on tariffs table

src/Modules/Retribusi/Summary/DailySummaryService.php

@@ -58,7 +58,7 @@ class DailySummaryService
                     e.location_code,
                     e.gate_code,
                     e.category,
-                    t.amount
+                    COALESCE(t.amount, 0)
             ";
 
             $stmt = $this->db->prepare($sql);