Fix parsing elements

Author: ben221199

src/Objects/Channel.php

@@ -16,7 +16,8 @@ public static function fromXML(string $xml){
         $simpleXML = new SimpleXMLElement($xml);
 
         $channel = new static;
-        $channel->order = Order::fromXML($simpleXML->xpath('order')[0]->asXML());
+        $orderXML = $simpleXML->xpath('order')[0] ?? null;
+        $channel->order = $orderXML?Order::fromXML($orderXML->asXML()):null;
         return $channel;
     }
 

src/Objects/Order.php

@@ -70,7 +70,8 @@ public static function fromXML(string $xml){
         $order->status_code = (string) $simpleXML->xpath('status_code')[0];
         $order->status_description = (string) $simpleXML->xpath('status_description')[0];
         $order->price = floatval((string) $simpleXML->xpath('price')[0]);
-        $order->details = Details::fromXML($simpleXML->xpath('details')[0]->asXML());
+        $detailsXML = $simpleXML->xpath('details')[0] ?? null;
+        $order->details = $detailsXML?Details::fromXML($detailsXML->asXML()):null;
         $order->order_complete = boolval((string) $simpleXML->xpath('order_complete')[0]);
         $order->done = boolval((string) $simpleXML->xpath('done')[0]);
         return $order;