bug fix for no data dirs

themes/beauty/controller/ListController.php

@@ -105,12 +105,12 @@ Class ListController extends Controller {
 
         //图片、视频类型筛选支持
         $showType = $this->get('show', 'all');
-        if ($showType == 'image') {
+        if ($showType == 'image' && !empty($scanResults[$cateId]['files'])) {
             $scanResults[$cateId]['files'] = array_filter($scanResults[$cateId]['files'], function($item) {
                 $imgExts = !empty(FSC::$app['config']['supportedImageExts']) ? FSC::$app['config']['supportedImageExts'] : array('jpg', 'jpeg', 'png', 'webp', 'gif');
                 return in_array($item['extension'], $imgExts);
             });
-        }else if ($showType == 'video') {
+        }else if ($showType == 'video' && !empty($scanResults[$cateId]['files'])) {
             $scanResults[$cateId]['files'] = array_filter($scanResults[$cateId]['files'], function($item) {
                 $videoExts = !empty(FSC::$app['config']['supportedVideoExts']) ? FSC::$app['config']['supportedVideoExts'] : array('mp4', 'mov', 'm3u8');
                 return in_array($item['extension'], $videoExts);