处理更新

src/main/java/com/izouma/nineth/service/DomainOrderService.java

@@ -291,8 +291,10 @@ public class DomainOrderService {
                                                 .getContent();
         DomainOrder first = domainOrderRepo
                 .findFirstByDomainNameAndOrderStatus(domain + ".nft", OrderStatus.FINISH);
-        if (!used.contains(first)) {
-            used.add(first);
+        if (first != null) {
+            if (!used.contains(first)) {
+                used.add(first);
+            }
         }
 
         String n = domain.substring(domain.length() - 1);