diff --git a/business/Task.php b/business/Task.php
index cdea1fb..bb84679 100644
--- a/business/Task.php
+++ b/business/Task.php
@@ -10,7 +10,7 @@
 	    private string $idlist; // # id associating task to list
         private bool $isDone; // # si la tache est complete
         
-	function __construct($titre,$description,$priorite,$idl,$dateDeb="",$dateFin="",$isDone=false,$id=0) {
+	function __construct($titre,$description,$priorite,$idl,$dateDeb=null,$dateFin=null,$isDone=false,$id=0) {
             # if id = 0, on veut donc creer une nouvelle tache
             # qui n'est pas encore dans la base de donnée et donc
             # le id sera fait avec le auto increment
diff --git a/controller/VisitorCtrl.php b/controller/VisitorCtrl.php
index 6951be5..93cca68 100644
--- a/controller/VisitorCtrl.php
+++ b/controller/VisitorCtrl.php
@@ -120,9 +120,12 @@ class VisitorCtrl
 
     function connection(){
         $isCo = $this->userModel->connexion($_POST['username'],$_POST['password']);
-        if(!$isCo)
+        if(!$isCo){
             $TMessage[] = 'This user does not exist'; require($this->TabVues["erreur"]);
-        $this->loadHome();
+            $this->loadHome();
+        }
+        else
+            $this->loadHome();
     }
 
     function go_register(){
diff --git a/dal/TaskGateway.php b/dal/TaskGateway.php
index 30a880c..6e3e8c3 100644
--- a/dal/TaskGateway.php
+++ b/dal/TaskGateway.php
@@ -17,18 +17,23 @@ class TaskGateway
 		// code de retour pour les fonctions i,u,d?
 		public function insertT(Task $t){
 			$query='INSERT INTO Tache VALUES (:id,:titre,:descript,:dateDeb,:dateFin,:priorite,:idList,false)';
+            if($t->get_dateDeb() == null)
+                $dateDeb = NULL;
+            else
+                $dateDeb = $t->get_dateDeb();
+            if($t->get_dateFin() == null)
+                $dateFin = NULL;
+            else
+                $dateFin = $t->get_dateFin();
+            
             $this->con->executeQuery($query, array(
             ':id'=> array($t->get_id(),PDO::PARAM_STR),
             ':titre'=> array($t->get_titre(),PDO::PARAM_STR),
             ':descript'=> array($t->get_description(),PDO::PARAM_STR),
-            ':dateDeb'=> array($t->get_dateDeb(),PDO::PARAM_STR),
-            ':dateFin'=> array($t->get_dateFin(),PDO::PARAM_STR),
+            ':dateDeb'=> array($dateDeb,PDO::PARAM_STR),
+            ':dateFin'=> array($dateFin,PDO::PARAM_STR),
             ':priorite'=> array($t->get_priorite(),PDO::PARAM_STR),
             ':idList'=> array($t->get_idList(),PDO::PARAM_STR) ));
-            
-            /*Comment gerer les erreurs?
-             * si valeur existe deja
-            */
 		}
 
 		public function update($table,$id,$element, $valeur){
diff --git a/model/TaskModel.php b/model/TaskModel.php
index 1a63606..748a3c5 100644
--- a/model/TaskModel.php
+++ b/model/TaskModel.php
@@ -13,7 +13,7 @@ class TaskModel
         $this->gtw= new TaskGateway($con);
     }
 
-    public function addTask($titre,$desc,$priorite,$idList,$dateDeb="",$dateFin="",$isDone=false,$id=0)
+    public function addTask($titre,$desc,$priorite,$idList,$dateDeb=null,$dateFin=null,$isDone=false,$id=0)
     {
         $t = new Task($titre,$desc,$priorite,$idList,$dateDeb,$dateFin,$isDone,$id);
         $this->gtw->insertT($t);
diff --git a/view/newList.php b/view/newList.php
index 423a963..a862a05 100644
--- a/view/newList.php
+++ b/view/newList.php
@@ -58,7 +58,7 @@
                                             <form action="index.php" class="row row-cols-lg-auto g-3 justify-content-center align-items-center mb-4 pb-2" method="post">
                                                 <div class="col-12">
                                                     <div class="form-outline">
-                                                    <input type="text" id="form1" class="form-control" name="listName"/>
+                                                    <input type="text" id="form1" class="form-control" name="listName" required/>
                                                     </div>
                                                 </div>