diff --git a/epmet-module/gov-issue/gov-issue-server/src/main/java/com/epmet/redis/IssueProjectTagDictRedis.java b/epmet-module/gov-issue/gov-issue-server/src/main/java/com/epmet/redis/IssueProjectTagDictRedis.java
index e95f856aae..7e4d3b456a 100644
--- a/epmet-module/gov-issue/gov-issue-server/src/main/java/com/epmet/redis/IssueProjectTagDictRedis.java
+++ b/epmet-module/gov-issue/gov-issue-server/src/main/java/com/epmet/redis/IssueProjectTagDictRedis.java
@@ -18,6 +18,7 @@
 package com.epmet.redis;
 
 import com.epmet.commons.tools.constant.NumConstant;
+import com.epmet.commons.tools.exception.RenException;
 import com.epmet.commons.tools.redis.RedisUtils;
 import com.epmet.commons.tools.utils.ConvertUtils;
 import com.epmet.constant.GovIssueRedisKeys;
@@ -93,7 +94,7 @@ public class IssueProjectTagDictRedis {
     public Map<String,List<IssueCategoryTagResultDTO>> getDefaultTagsSortedByCategoryAndCustomizedTagsOrderByRank(String customerId,List<String> category) {
         if (StringUtils.isBlank(customerId)) {
             log.error("customerId can not be null when obtain govern tags.");
-            return null;
+            throw new RenException("customerId can not be null when obtain govern tags.");
         }
 
         IssueProjectCategoryDictEntity otherCategory = categoryDictDao.selectSingleByCustomerIdAndCategoryNameAndCategoryType(customerId, ModuleConstants.CATEGORY_NAME_OTHERS, null);
@@ -139,7 +140,7 @@ public class IssueProjectTagDictRedis {
 
         if (CollectionUtils.isEmpty(compensate)) {
             log.error("compensation failure or there is no tag data in database!!");
-            return null;
+            throw new RenException("compensation failure or there is no tag data in database!!");
         } else {
             log.warn("compensation completed!!");
             return compensate;