校验Long类型NotEmpty改为NotNull

yudao-module-bpm/yudao-module-bpm-base/src/main/java/cn/iocoder/yudao/module/bpm/service/message/dto/BpmMessageSendWhenTaskCreatedReqDTO.java

@@ -21,7 +21,7 @@ public class BpmMessageSendWhenTaskCreatedReqDTO {
      */
     @NotEmpty(message = "流程实例的名字不能为空")
     private String processInstanceName;
-    @NotEmpty(message = "发起人的用户编号")
+    @NotNull(message = "发起人的用户编号")
     private Long startUserId;
     @NotEmpty(message = "发起人的昵称")
     private String startUserNickname;