diff --git a/plugin/courseblock/CourseBlockPlugin.php b/plugin/courseblock/CourseBlockPlugin.php
index 2f34bde359..c62a476052 100644
--- a/plugin/courseblock/CourseBlockPlugin.php
+++ b/plugin/courseblock/CourseBlockPlugin.php
@@ -66,7 +66,7 @@ class CourseBlockPlugin extends Plugin
         $this->uninstall_course_fields_in_all_courses();
     }
 
-        /**
+    /**
      * @param string $region
      * @return string
      */
diff --git a/plugin/customfooter/plugin.php b/plugin/customfooter/plugin.php
index b59bb517fe..1a839c3cf9 100644
--- a/plugin/customfooter/plugin.php
+++ b/plugin/customfooter/plugin.php
@@ -1,18 +1,19 @@
 <?php
 /**
- * This script is a configuration file for the delivery tools plugin. You can use it as a master for other platform plugins (course plugins are slightly different).
+ * This script is a configuration file for the delivery tools plugin.
+ * You can use it as a master for other platform plugins (course plugins are slightly different).
  * These settings will be used in the administration interface for plugins (Chamilo configuration settings->Plugins)
  * @package chamilo.plugin
  * @author Julio Montoya <gugli100@gmail.com>
  */
 
-require_once __DIR__.'/lib/customfooter_plugin.class.php';
 
 /**
  * Plugin details (must be present)
  */
 
 /* Plugin config */
+$plugin_info = CustomFooterPlugin::create()->get_info();
 
 //the plugin title
 $plugin_info['title'] = 'Custom Footer';
@@ -35,7 +36,9 @@ $form = new FormValidator('customfooter_form');
 
 $plugininstance = CustomFooterPlugin::create();
 
-$config = api_get_settings_params(array('subkey = ? ' => 'customfooter', ' AND category = ? ' => 'Plugins'));
+$config = api_get_settings_params(
+    array('subkey = ? ' => 'customfooter', ' AND category = ? ' => 'Plugins')
+);
 $form_settings = [];
 
 foreach ($config as $fooid => $configrecord) {
@@ -48,9 +51,7 @@ foreach ($config as $fooid => $configrecord) {
 // A simple select.
 $form->addElement('text', 'footer_left', $plugininstance->get_lang('footerleft'));
 $form->addElement('text', 'footer_right', $plugininstance->get_lang('footerright'));
-
 $form->addButtonSave($plugininstance->get_lang('Save'));
-
 $form->setDefaults($form_settings);
 
-$plugin_info['settings_form'] = $form;
\ No newline at end of file
+$plugin_info['settings_form'] = $form;
diff --git a/plugin/grading_electronic/generate.php b/plugin/grading_electronic/generate.php
index 142835b4b3..7b1141face 100644
--- a/plugin/grading_electronic/generate.php
+++ b/plugin/grading_electronic/generate.php
@@ -65,13 +65,14 @@ try {
         GradingElectronicPlugin::EXTRAFIELD_COURSE_HOURS
     );
 
+    $students = [];
+
     if ($session) {
         $criteria = Criteria::create()->where(
             Criteria::expr()->eq('relationType', Session::STUDENT)
         );
 
         $subscriptions = $session->getUsers()->matching($criteria);
-        $students = [];
 
         /** @var SessionRelUser $subscription */
         foreach ($subscriptions as $subscription) {
diff --git a/plugin/grading_electronic/lang/english.php b/plugin/grading_electronic/lang/english.php
index b155f098e0..b2891b6106 100644
--- a/plugin/grading_electronic/lang/english.php
+++ b/plugin/grading_electronic/lang/english.php
@@ -7,7 +7,7 @@ $strings['plugin_comment'] = 'This plugin create a text file with information ab
 $strings['tool_enable'] = 'Enable tool';
 $strings['tool_enable_help'] = '
     Allow add the <i>Generate File</i> button in the <i>Assessments</i> page.
-    You nee assign the <code>content_top</code> region.
+    You need assign the <code>content_top</code> region.
 ';
 
 $strings['PluginDisabled'] = 'Grading Electronic is disabed';