修复获取空路径图片路径函数错误

vendor/jajuma/module-webpimages/Helper/Data.php

@@ -458,6 +458,9 @@ class Data extends AbstractHelper
      */
     public function getImageUrlFromPath($imagePath)
     {
+        if (empty($imagePath)){
+            return ;
+        }
         $systemPaths = $this->getSystemPaths();
         if (!preg_match('/^http/', $imagePath)) {
             foreach ($systemPaths as $systemPath) {