♻ #12724

src/main/java/org/b3log/solo/service/OptionQueryService.java

@@ -54,7 +54,15 @@ public class OptionQueryService {
      */
     public JSONObject getSkin() {
         try {
-            return getOptions(Option.CATEGORY_C_SKIN);
+            JSONObject ret = getOptions(Option.CATEGORY_C_SKIN);
+            if (null == ret) {
+                // TODO: 在 v3.5.0 发布后可移除判空
+                ret = new JSONObject().
+                        put(Option.ID_C_SKIN_DIR_NAME, Option.DefaultPreference.DEFAULT_SKIN_DIR_NAME).
+                        put(Option.ID_C_MOBILE_SKIN_DIR_NAME, Option.DefaultPreference.DEFAULT_MOBILE_SKIN_DIR_NAME);
+            }
+
+            return ret;
         } catch (final Exception e) {
             LOGGER.log(Level.ERROR, "Gets skin failed", e);