修复异常提醒，从而正确的跟踪异常信息

yzg-util-db/src/main/java/com/yanzuoguang/log/LogUrlCountVo.java

@@ -21,6 +21,7 @@ public class LogUrlCountVo {
     private volatile long maxTime;
 
     public LogUrlCountVo(String tag, String url, int level) {
+        this.tag = tag;
         this.url = url;
         this.level = level;
     }