diff --git a/main/gradebook/lib/GradebookUtils.php b/main/gradebook/lib/GradebookUtils.php
index 0446b08faa..4ba3be6f88 100644
--- a/main/gradebook/lib/GradebookUtils.php
+++ b/main/gradebook/lib/GradebookUtils.php
@@ -1733,6 +1733,7 @@ class GradebookUtils
         $imgSrcPdf = Display::return_icon('pdf.png', '', [], ICON_SIZE_MEDIUM, false, true);
 
         $urlDownload = api_get_path(WEB_CODE_PATH).'gradebook/gradebook_display_certificate.php?'.api_get_cidreq().'&action=download_all_certificates&catId='.$categoryId;
+
         return "<script>
             $(function () {
                 var \$btnExport = $('$buttonSelector'),
diff --git a/main/inc/lib/PortfolioController.php b/main/inc/lib/PortfolioController.php
index ff0d0e2b97..dc1b285aee 100644
--- a/main/inc/lib/PortfolioController.php
+++ b/main/inc/lib/PortfolioController.php
@@ -2478,6 +2478,7 @@ class PortfolioController
         if (isset($parentId)) {
             $categoriesCriteria['parentId'] = $parentId;
         }
+
         return $this->em
             ->getRepository(PortfolioCategory::class)
             ->findBy($categoriesCriteria);
@@ -2921,6 +2922,7 @@ class PortfolioController
      * It parsers a title for a variable in lang.
      *
      * @param $defaultDisplayText
+     *
      * @return string
      */
     private function getLanguageVariable($defaultDisplayText)
@@ -2936,6 +2938,7 @@ class PortfolioController
      * It translates the text as parameter.
      *
      * @param $defaultDisplayText
+     *
      * @return mixed
      */
     private function translateDisplayName($defaultDisplayText)
diff --git a/src/Chamilo/CoreBundle/Entity/PortfolioCategory.php b/src/Chamilo/CoreBundle/Entity/PortfolioCategory.php
index 100b0f32f6..d039e60371 100644
--- a/src/Chamilo/CoreBundle/Entity/PortfolioCategory.php
+++ b/src/Chamilo/CoreBundle/Entity/PortfolioCategory.php
@@ -217,9 +217,7 @@ class PortfolioCategory
     }
 
     /**
-     * Set parent id
-     *
-     * @param int $parentId
+     * Set parent id.
      *
      * @return PortfolioCategory
      */
@@ -230,8 +228,6 @@ class PortfolioCategory
         return $this;
     }
 
-
-
     /**
      * Get items.
      *