feat: refresh existing snapshots from XML after sync

src/BusProNet/XmlLoader/PickupLoader.php

@@ -137,6 +137,9 @@ class PickupLoader extends AbstractLoader
     {
         foreach ($pickups as $pickup) {
             $pickupData = $this->loadById($pickup->id);
+            if (null === $pickupData) {
+                continue;
+            }
 
             $pickup->code = $pickupData->code;
             $pickup->postalCode = $pickupData->postalCode;

src/BusProNet/XmlLoader/TravelLoader.php

@@ -102,7 +102,7 @@ class TravelLoader extends AbstractLoader
                 return $mapping;
             });
         } catch (InvalidArgumentException $e) {
-            return [];
+            throw new \RuntimeException('Cache key error in generateFilesMap', 0, $e);
         }
     }