diff --git a/DataRoom/dataroom-core/src/main/java/com/gccloud/dataroom/core/module/manage/service/impl/DataRoomPageServiceImpl.java b/DataRoom/dataroom-core/src/main/java/com/gccloud/dataroom/core/module/manage/service/impl/DataRoomPageServiceImpl.java
index 7fe48eee11ef79b4700216363e355cdac28c58e7..419069c5333a7b42360a9acfc51180e5e90e2cd4 100644
--- a/DataRoom/dataroom-core/src/main/java/com/gccloud/dataroom/core/module/manage/service/impl/DataRoomPageServiceImpl.java
+++ b/DataRoom/dataroom-core/src/main/java/com/gccloud/dataroom/core/module/manage/service/impl/DataRoomPageServiceImpl.java
@@ -247,6 +247,9 @@ public class DataRoomPageServiceImpl extends ServiceImpl<DataRoomPageDao, PageEn
             return page;
         }
         String urlPrefix = bigScreenConfig.getFile().getUrlPrefix();
+        if (urlPrefix == null){
+            urlPrefix = "";
+        }
         if (!urlPrefix.endsWith("/")) {
             urlPrefix += "/";
         }
diff --git a/data-room-ui/package.json b/data-room-ui/package.json
index 6b36ffe59db8d207d45ae3ef72d4f3e7d38a5a78..4d2709e691d19c2de862e8719a278ec6d614fa72 100644
--- a/data-room-ui/package.json
+++ b/data-room-ui/package.json
@@ -125,9 +125,9 @@
     "husky": "^4.2.5",
     "jest": "^27.1.0",
     "lint-staged": "^10.2.11",
-    "node-sass": "4.14.1",
+    "sass": "1.32.13",
+    "sass-loader": "10.1.1",
     "runjs": "^4.3.2",
-    "sass-loader": "7.1.0",
     "script-ext-html-webpack-plugin": "2.1.3",
     "script-loader": "0.7.2",
     "serve-static": "^1.13.2",