diff --git a/Source/API/script/ExceptionHandle/TypeError.php b/Source/API/script/ExceptionHandle/TypeError.php
new file mode 100644
index 0000000..102697c
--- /dev/null
+++ b/Source/API/script/ExceptionHandle/TypeError.php
@@ -0,0 +1,12 @@
+<?php
+
+use Slim\Exception\HttpSpecializedException;
+
+class TypeErrorMethod extends HttpSpecializedException {
+
+    protected $code = 400;
+    protected $message =  "Bad Parameters";
+    protected string $title = "400 Bad Parameters";
+    protected string $description = "The API need a 'method' query params in URL. Exemple :'http://url?method=getSomething'";
+
+}
diff --git a/Source/API/script/index.php b/Source/API/script/index.php
index 9d1e76c..b138e33 100644
--- a/Source/API/script/index.php
+++ b/Source/API/script/index.php
@@ -2,61 +2,56 @@
 
 use Psr\Http\Message\ResponseInterface as Response;
 use Psr\Http\Message\ServerRequestInterface as Request;
-use Slim\Exception\HttpNotFoundException;
 use Slim\Factory\AppFactory;
 
-try{
-    require 'Config/vendor/autoload.php';
-
-    /**
-     * Instantiate App
-     */
-    $app = AppFactory::create();
-
-    // Add Routing Middleware
-    $app->addRoutingMiddleware();
-
-    /**
-     * Add Error Handling Middleware
-     *
-     * @param bool $displayErrorDetails -> Should be set to false in production
-     * @param bool $logErrors -> Parameter is passed to the default ErrorHandler
-     * @param bool $logErrorDetails -> Display error details in error log
-     */
-    $errorMiddleware = $app->addErrorMiddleware(true, true, true);
-    try {
-        $app->get('/', function (Request $request, Response $response) {
-            $parameters = $request->getQueryParams();
-            if (empty($parameters['method'])){
-                throw new TypeError("No method specified");
-            }else{
-                $method = $parameters['method'];
-            }
-            unset($parameters['method']);
-            $listGateway = array("\\Gateway\\GatewayForm", "\\Gateway\\GatewayKeyword", "\\Gateway\\GatewayQuestion");
-            foreach ($listGateway as $gateway){
-                if (method_exists($gateway, $method)) {
-                    $response->getBody()->write(print_r((new $gateway)->$method($parameters)));
-                }
-            }
-            $temp = array(0 => array("id" => "1",
-                                      "0" => "1",
-                                  "title" => "Votre avis nous intéresse !",
-                                      "1" => "Votre avis nous intéresse !",
-                            "description" => "Ce formulaire vous permet de candidater à une potentielle interview si votre profil nous intéresse.",
-                                      "2" => "Ce formulaire vous permet de candidater à une potentielle interview si votre profil nous intéresse."
-            ));
-            $response->getBody()->write(json_encode($temp));
-            return $response->withHeader('Content-type', 'application/json');
-        });
-    }catch (TypeError $t){
-        echo "Error, wrong parameters key, or no parameters write : ".$t->getMessage();
-    }
-
-
-    // Run app
-    $app->run();
-}catch (HttpNotFoundException $e) {
-    echo "Error, not Found : " . $e->getMessage();
-}
 
+require 'Config/vendor/autoload.php';
+
+/**
+ * Instantiate App
+ */
+$app = AppFactory::create();
+
+// Add Routing Middleware
+$app->addRoutingMiddleware();
+
+/**
+ * Add Error Handling Middleware
+ *
+ * @param bool $displayErrorDetails -> Should be set to false in production
+ * @param bool $logErrors -> Parameter is passed to the default ErrorHandler
+ * @param bool $logErrorDetails -> Display error details in error log
+ */
+$errorMiddleware = $app->addErrorMiddleware(true, true, true);
+
+/**
+ * Add a route for the API
+ */
+$app->get('/', function (Request $request, Response $response) {
+    $parameters = $request->getQueryParams();
+    if (empty($parameters['method'])){
+        throw new TypeErrorMethod($request);
+    }else{
+        $method = $parameters['method'];
+    }
+    unset($parameters['method']);
+    $listGateway = array("\\Gateway\\GatewayForm", "\\Gateway\\GatewayKeyword", "\\Gateway\\GatewayQuestion");
+    foreach ($listGateway as $gateway){
+        if (method_exists($gateway, $method)) {
+            $response->getBody()->write(json_encode((new $gateway)->$method($parameters)));
+        }
+    }
+    $temp = array(0 => array("id" => "1",
+                              "0" => "1",
+                          "title" => "Votre avis nous intéresse !",
+                              "1" => "Votre avis nous intéresse !",
+                    "description" => "Ce formulaire vous permet de candidater à une potentielle interview si votre profil nous intéresse.",
+                              "2" => "Ce formulaire vous permet de candidater à une potentielle interview si votre profil nous intéresse."
+    ));
+    $response->getBody()->write(json_encode($temp));
+    return $response->withHeader('Content-type', 'application/json');
+});
+
+
+// Run app
+$app->run();
\ No newline at end of file