diff --git a/main/course_description/resources/js/main.js b/main/course_description/resources/js/main.js
index e1e85681e6..964ea0232f 100755
--- a/main/course_description/resources/js/main.js
+++ b/main/course_description/resources/js/main.js
@@ -1,44 +1,40 @@
+function Proxy() {
+}
 
-function Proxy() {};
-
-Proxy.prototype.root = function(){
+Proxy.prototype.root = function () {
     return www + '/main/inc/ajax/course_description.ajax.php';
 }
 
-Proxy.prototype.post = function(data, f){    
-    if(typeof(sec_token)!=='undefined'){  
+Proxy.prototype.post = function (data, f) {
+    if (typeof(sec_token) !== 'undefined') {
         data.sec_token = sec_token;
     }
     $.post(this.root(), data, f, 'json');
 }
 
-
 var CourseDescription = new Proxy();
 
-CourseDescription.del = function(c_id, id, f)
-{
+CourseDescription.del = function (c_id, id, f) {
     var data = {
-        c_id: c_id, 
-        id: id, 
+        c_id: c_id,
+        id: id,
         action: 'delete'
     };
     this.post(data, f);
 };
 
-CourseDescription.delete_by_course = function(c_id, session_id, f)
-{
+CourseDescription.delete_by_course = function (c_id, session_id, f) {
     var data = {
-        c_id: c_id, 
-        session_id: session_id, 
+        c_id: c_id,
+        session_id: session_id,
         action: 'delete_by_course'
     };
     this.post(data, f);
 };
 
-
 var message = {};
 
-message.update = function(data){
-    text = typeof(data)=='string' ? data : data.message;
-    $('#messages').html(text)
+message.update = function (data) {
+    text = typeof(data) == 'string' ? data : data.message;
+    $('#messages').html(text);
 }
\ No newline at end of file
diff --git a/main/inc/lib/TicketManager.php b/main/inc/lib/TicketManager.php
index 8691297cf6..63bee19159 100644
--- a/main/inc/lib/TicketManager.php
+++ b/main/inc/lib/TicketManager.php
@@ -196,7 +196,7 @@ class TicketManager
 
         $table = Database::get_main_table(TABLE_TICKET_CATEGORY_REL_USER);
         foreach ($users as $userId) {
-            if (self::userIsAssignedToCategory($userId, $categoryId) == false) {
+            if (self::userIsAssignedToCategory($userId, $categoryId) === false) {
                 $params = [
                     'category_id' => $categoryId,
                     'user_id' => $userId,
@@ -217,8 +217,8 @@ class TicketManager
     public static function userIsAssignedToCategory($userId, $categoryId)
     {
         $table = Database::get_main_table(TABLE_TICKET_CATEGORY_REL_USER);
-        $userId = intval($userId);
-        $categoryId = intval($categoryId);
+        $userId = (int) $userId;
+        $categoryId = (int) $categoryId;
         $sql = "SELECT * FROM $table 
                 WHERE category_id = $categoryId AND user_id = $userId";
         $result = Database::query($sql);
@@ -234,7 +234,7 @@ class TicketManager
     public static function getUsersInCategory($categoryId)
     {
         $table = Database::get_main_table(TABLE_TICKET_CATEGORY_REL_USER);
-        $categoryId = intval($categoryId);
+        $categoryId = (int) $categoryId;
         $sql = "SELECT * FROM $table WHERE category_id = $categoryId";
         $result = Database::query($sql);
 
@@ -247,7 +247,7 @@ class TicketManager
     public static function deleteAllUserInCategory($categoryId)
     {
         $table = Database::get_main_table(TABLE_TICKET_CATEGORY_REL_USER);
-        $categoryId = intval($categoryId);
+        $categoryId = (int) $categoryId;
         $sql = "DELETE FROM $table WHERE category_id = $categoryId";
         Database::query($sql);
     }
@@ -583,8 +583,8 @@ class TicketManager
         $ticketId,
         $userId
     ) {
-        $ticketId = intval($ticketId);
-        $userId = intval($userId);
+        $ticketId = (int) $ticketId;
+        $userId = (int) $userId;
 
         if (empty($ticketId)) {
             return false;
@@ -636,8 +636,8 @@ class TicketManager
         $status = 'NOL',
         $sendConfirmation = false
     ) {
-        $ticketId = intval($ticketId);
-        $userId = intval($userId);
+        $ticketId = (int) $ticketId;
+        $userId = (int) $userId;
         $table_support_messages = Database::get_main_table(TABLE_TICKET_MESSAGE);
         $table_support_tickets = Database::get_main_table(TABLE_TICKET_TICKET);
         if ($sendConfirmation) {
@@ -764,24 +764,26 @@ class TicketManager
      * @param int $number_of_items
      * @param $column
      * @param $direction
-     * @param int $userId
      *
      * @return array
      */
-    public static function get_tickets_by_user_id(
+    public static function getTicketsByCurrentUser(
         $from,
         $number_of_items,
         $column,
-        $direction,
-        $userId = 0
+        $direction
     ) {
         $table_support_category = Database::get_main_table(TABLE_TICKET_CATEGORY);
         $table_support_tickets = Database::get_main_table(TABLE_TICKET_TICKET);
         $table_support_priority = Database::get_main_table(TABLE_TICKET_PRIORITY);
         $table_support_status = Database::get_main_table(TABLE_TICKET_STATUS);
         $direction = !empty($direction) ? $direction : 'DESC';
-        $userId = !empty($userId) ? $userId : api_get_user_id();
+        $userId = api_get_user_id();
         $userInfo = api_get_user_info($userId);
+
+        if (empty($userInfo)) {
+            return [];
+        }
         $isAdmin = UserManager::is_admin($userId);
 
         if (!isset($_GET['project_id'])) {
@@ -995,11 +997,9 @@ class TicketManager
     }
 
     /**
-     * @param int $userId
-     *
      * @return int
      */
-    public static function get_total_tickets_by_user_id($userId = 0)
+    public static function getTotalTicketsCurrentUser()
     {
         $table_support_category = Database::get_main_table(TABLE_TICKET_CATEGORY);
         $table_support_tickets = Database::get_main_table(TABLE_TICKET_TICKET);
@@ -1106,7 +1106,7 @@ class TicketManager
     /**
      * @param int $id
      *
-     * @return MessageAttachment
+     * @return false|MessageAttachment
      */
     public static function getTicketMessageAttachment($id)
     {
diff --git a/main/inc/lib/plugin.class.php b/main/inc/lib/plugin.class.php
index d968051cb6..93620c9405 100755
--- a/main/inc/lib/plugin.class.php
+++ b/main/inc/lib/plugin.class.php
@@ -978,4 +978,12 @@ class Plugin
 
         return $tool;
     }
+
+    /**
+     * @param bool $value
+     */
+    public function setHasPersonalEvents($value)
+    {
+        $this->hasPersonalEvents = $value;
+    }
 }
diff --git a/main/ticket/tickets.php b/main/ticket/tickets.php
index 6255e7ee80..2e60379579 100644
--- a/main/ticket/tickets.php
+++ b/main/ticket/tickets.php
@@ -59,8 +59,8 @@ $projectId = isset($_GET['project_id']) ? (int) $_GET['project_id'] : 0;
 
 $table = new SortableTable(
     'Tickets',
-    ['TicketManager', 'get_total_tickets_by_user_id'],
-    ['TicketManager', 'get_tickets_by_user_id'],
+    ['TicketManager', 'getTotalTicketsCurrentUser'],
+    ['TicketManager', 'getTicketsByCurrentUser'],
     2,
     20,
     'DESC'
diff --git a/plugin/learning_calendar/LearningCalendarPlugin.php b/plugin/learning_calendar/LearningCalendarPlugin.php
index a638b192ce..e74e7ad197 100644
--- a/plugin/learning_calendar/LearningCalendarPlugin.php
+++ b/plugin/learning_calendar/LearningCalendarPlugin.php
@@ -15,10 +15,10 @@ class LearningCalendarPlugin extends Plugin
      */
     protected function __construct()
     {
-        $this->hasPersonalEvents = true;
         $version = '0.1';
         $author = 'Julio Montoya';
         parent::__construct($version, $author, ['enabled' => 'boolean']);
+        $this->setHasPersonalEvents(true);
     }
 
     /**