diff --git a/Source/API/script/index.php b/Source/API/script/index.php
index b59f9fc..4eacac5 100644
--- a/Source/API/script/index.php
+++ b/Source/API/script/index.php
@@ -24,30 +24,31 @@ try{
      * @param bool $logErrorDetails -> Display error details in error log
      */
     $errorMiddleware = $app->addErrorMiddleware(true, true, true);
-
-    $app->get('/', function (Request $request, Response $response) {
-        $parameters = $request->getQueryParams();
-        $method = $parameters['method'];
-        $response->getBody()->write($method);
-        $listGateway = array("\\Gateway\\GatewayForm", "\\Gateway\\GatewayKeyword", "\\Gateway\\GatewayQuestion");
-        foreach ($listGateway as $gateway) // Pour chaque Gateway
-        {
-            if (method_exists($gateway, $method)) {
-                (new $gateway)->$method($parameters); // Si oui, on appelle cette fonction
+    try {
+        $app->get('/', function (Request $request, Response $response) {
+            $parameters = $request->getQueryParams();
+            $method = $parameters['method'];
+            $response->getBody()->write($method);
+            $listGateway = array("\\Gateway\\GatewayForm", "\\Gateway\\GatewayKeyword", "\\Gateway\\GatewayQuestion");
+            foreach ($listGateway as $gateway) // Pour chaque Gateway
+            {
+                if (method_exists($gateway, $method)) {
+                    (new $gateway)->$method($parameters); // Si oui, on appelle cette fonction
+                }
+            }
+            $response->getBody()->write("Use the method $method, with the parameters ");
+            foreach ($parameters as $key => $value) {
+                $response->getBody()->write("Key =>" . $key . ", value =>" . $value);
             }
-        }
-        $response->getBody()->write("Use the method $method, with the parameters ");
-        foreach ($parameters as $key => $value) {
-            $response->getBody()->write("Key =>" . $key . ", value =>" . $value);
-        }
-        return $response;
-    });
+            return $response->withHeader('Content-type', 'application/json');
+        });
+    }catch (TypeError $t){
+    echo "Error, wrong parameters key, or no parameters write : ".$t->getMessage();
+    }
 
-// Run app
+    // Run app
     $app->run();
-}catch (HttpNotFoundException $e){
-    echo "Error, not Found : ".$e->getMessage();
-}catch (TypeError $t){
-    echo "Error, wrong parameters key, or no parameters write : ".$t->getMessage();
+}catch (HttpNotFoundException $e) {
+    echo "Error, not Found : " . $e->getMessage();
 }