Add debug data for existing advance order slots #403

src/Controller/APIController.php

@@ -3068,6 +3068,8 @@ class APIController extends Controller implements LoggedController
             $hour = $date_sched->format('H');
             $slot_id = sprintf('%02d_%02d', $hour, $hour + 1);
 
+            error_log("SLOT - $date_string - $slot_id");
+
             // decrement rider slot
             $hub_rider_slots[$date_string][$slot_id]--;
         }