diff --git a/VERSION b/VERSION
index 6a39225..5b3a517 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-v3.8.3
+v3.8.4
diff --git a/descartes/ApiController.php b/descartes/ApiController.php
index feaa303..da738d3 100644
--- a/descartes/ApiController.php
+++ b/descartes/ApiController.php
@@ -91,21 +91,21 @@ public function auto_http_code ($success = true)
 	
 		/**
 		 * Cette fonction permet de faire un retour sous forme de json
-		 * @param array $data : Les données à retourner sous forme de json
+		 * @param array $datas : Les données à retourner sous forme de json
 		 * @param boolean $secure : Défini si l'affichage doit être sécurisé contre les XSS, par défaut true
 		 * @return ApiController : On retourne l'API controlleur lui meme pour pouvoir chainer
 		 */
-		public function json ($data, $secure = true)
+		public function json ($datas, $secure = true)
 		{
 			header('Content-Type: application/json');
 			
 			if ($secure)
 			{
-				echo htmlspecialchars(json_encode($data), ENT_NOQUOTES);
+				echo htmlspecialchars(json_encode($datas), ENT_NOQUOTES);
 			}
 			else
 			{
-				echo json_encode($data);
+				echo json_encode($datas);
 			}
 
 			return $this;
diff --git a/descartes/Controller.php b/descartes/Controller.php
index 7c2caf9..1d7832a 100644
--- a/descartes/Controller.php
+++ b/descartes/Controller.php
@@ -24,7 +24,7 @@ protected function render (string $template, ?array $variables = array(), string
 
 			if (!is_readable($template_path))
             {
-                throw new DescartesTemplateNotReadableException('Template ' . $template_path . ' is not readable.');
+                throw new exceptions\DescartesExceptionTemplateNotReadable('Template ' . $template_path . ' is not readable.');
             }
 
             require $template_path;
diff --git a/descartes/Router.php b/descartes/Router.php
index a88bea4..5b78a05 100644
--- a/descartes/Router.php
+++ b/descartes/Router.php
@@ -72,6 +72,10 @@ public static function url (string $controller, string $method, array $params =
 		protected static function clean_url (string $url)
         {
             $to_remove = parse_url(HTTP_PWD, PHP_URL_PATH);
+            if ($to_remove === null)
+            {
+                return $url;
+            } 
             
             $url = mb_strcut($url, mb_strlen($to_remove));
             $url = parse_url($url, PHP_URL_PATH);
diff --git a/descartes/env.php b/descartes/env.php
index c512901..7b5428c 100644
--- a/descartes/env.php
+++ b/descartes/env.php
@@ -4,7 +4,7 @@
     /*
      * Define Descartes env
      */
-    $http_dir_path = '/raspisms'; //Path we need to put after servername in url to access app
+    $http_dir_path = ''; //Path we need to put after servername in url to access app
     $https = $_SERVER['HTTPS'] ?? 0;
 
     // Check for proxy forward
@@ -27,10 +27,9 @@
     $port = $proxy ? '' : $port;
     $http_server_port = $port ? ':' . $port : '';
     
-
+    
     $pwd = substr(__DIR__, 0, strrpos(__DIR__, '/'));
-    $http_pwd = $http_protocol . $http_server_name . $http_server_port . $http_dir_path;
-
+    
 
     $env = [
         //Global http and file path
@@ -39,31 +38,25 @@
         'HTTP_SERVER_NAME' => $http_server_name,
         'HTTP_SERVER_PORT' => $http_server_port,
         'PWD' => $pwd,
-        'HTTP_PWD' => $http_pwd,
-
+        
         //path of back resources
         'PWD_CONTROLLER' =>  $pwd . '/controllers', //Controllers dir
         'PWD_MODEL' => $pwd . '/models', //Models dir
         'PWD_TEMPLATES' => $pwd . '/templates', //Templates dir
 
         //path of front resources
-        'PWD_ASSETS' => $pwd . '/assets', //Assets dir
-        'HTTP_PWD_ASSETS' => $http_pwd . '/assets', //HTTP path of asset dir
+        'PWD_ASSETS' => $pwd . '/assets', //Assets dir 
 
         //images
         'PWD_IMG' => $pwd . '/assets' . '/img',
-        'HTTP_PWD_IMG' => $http_pwd . '/assets' . '/img', 
-
+        
         //css
         'PWD_CSS' => $pwd . '/assets' . '/css', 
-        'HTTP_PWD_CSS' => $http_pwd . '/assets' . '/css', 
-
+        
         //javascript
         'PWD_JS' => $pwd . '/assets' . '/js', 
-        'HTTP_PWD_JS' => $http_pwd . '/assets' . '/js', 
-
+        
         //fonts
         'PWD_FONT' => $pwd . '/assets' . '/font', 
-        'HTTP_PWD_FONT' => $http_pwd . '/assets' . '/font', 
     ];
 
diff --git a/descartes/load-environment.php b/descartes/load-environment.php
index a4ce6c7..2bae0bf 100644
--- a/descartes/load-environment.php
+++ b/descartes/load-environment.php
@@ -21,6 +21,7 @@ function load_env ()
         $environment = [];
         $env = [];
         
+        // Load descartes base env
         require_once(__DIR__ . '/env.php');
         $environment = array_merge($environment, $env);
 
@@ -31,11 +32,8 @@ function load_env ()
             $environment = array_merge($environment, $env);
         }
 
-        //Define all Descartes constants 
-        define_array($environment);
-
         ### GLOBAL ENV ###
-        $environment = [];
+        //Load global app env
         $env = [];
         if (file_exists(__DIR__ . '/../env.php'))
         {
@@ -43,19 +41,30 @@ function load_env ()
             $environment = array_merge($environment, $env);
         }
 
-        define_array($environment);
-
 
         ### SPECIFIC ENV ###
-        $environment = [];
+        // Load specific environment env
         $env = [];
-        
-        if (defined('ENV') && file_exists(__DIR__ . '/../env.' . ENV . '.php'))
+        if (isset($environment['ENV']) && file_exists(__DIR__ . '/../env.' . $environment['ENV'] . '.php'))
         {
-            require_once(__DIR__ . '/../env.' . ENV . '.php');
+            require_once(__DIR__ . '/../env.' . $environment['ENV'] . '.php');
             $environment = array_merge($environment, $env);
         }
 
+        ### BUILD HTTP PWD CONSTS ###
+        // We compute http pwd at last minute to allow for simple overriding by user
+        // by simply defining custom HTTP_* (PROTOCOL, SERVER_NAME, SERVER_PORT, DIR_PATH) 
+        $http_pwd = $environment['HTTP_PROTOCOL'] . $environment['HTTP_SERVER_NAME'] . $environment['HTTP_SERVER_PORT'] . $environment['HTTP_DIR_PATH'];
+        $env = [
+            "HTTP_PWD" => $http_pwd,
+            'HTTP_PWD_ASSETS' => $http_pwd . '/assets', //HTTP path of asset dir
+            'HTTP_PWD_IMG' => $http_pwd . '/assets' . '/img', 
+            'HTTP_PWD_CSS' => $http_pwd . '/assets' . '/css', 
+            'HTTP_PWD_JS' => $http_pwd . '/assets' . '/js', 
+            'HTTP_PWD_FONT' => $http_pwd . '/assets' . '/font',
+        ];
+        $environment = array_merge($environment, $env);
+
         define_array($environment);
     }
 
diff --git a/env.php.dist b/env.php.dist
index afd6dd5..dcae872 100644
--- a/env.php.dist
+++ b/env.php.dist
@@ -2,23 +2,25 @@
 	/*
         This file define constants and options for the app
 	*/
-
+    $dir_path = '/raspisms';
+    $http_pwd = $environment['HTTP_PROTOCOL'] . $dir_path . $environment['HTTP_SERVER_PORT'] . $environment['HTTP_DIR_PATH'];
     $env = [
         'ENV' => '%APP_ENV%', #env name (probably 'dev' or 'prod'), this value is used to get the env.XXX.php.dist matching env file
         'SESSION_NAME' => 'raspisms',
+        'HTTP_DIR_PATH' => $dir_path, // Override default dir path
 
         //RaspiSMS settings
         'WEBSITE_TITLE' => 'RaspiSMS',
         'WEBSITE_DESCRIPTION' => '',
         'WEBSITE_AUTHOR' => 'Raspberry Pi FR',
-        'PWD_SCRIPTS' => PWD . '/scripts',
-        'PWD_RECEIVEDS' => PWD . '/receiveds',
-        'HTTP_PWD_SOUND' => HTTP_PWD_ASSETS . '/sounds',
-        'PWD_ADAPTERS' => PWD . '/adapters',
-        'PWD_DATA' => PWD . '/data',
-        'HTTP_PWD_DATA' => HTTP_PWD . '/data',
-        'PWD_DATA_PUBLIC' => PWD . '/data/public',
-        'HTTP_PWD_DATA_PUBLIC' => HTTP_PWD . '/data/public',
+        'PWD_SCRIPTS' => $environment['PWD'] . '/scripts',
+        'PWD_RECEIVEDS' => $environment['PWD'] . '/receiveds',
+        'HTTP_PWD_SOUND' => $http_pwd . '/assets' . '/sounds',
+        'PWD_ADAPTERS' => $environment['PWD'] . '/adapters',
+        'PWD_DATA' => $environment['PWD'] . '/data',
+        'HTTP_PWD_DATA' =>  $http_pwd . '/data',
+        'PWD_DATA_PUBLIC' => $environment['PWD'] . '/data/public',
+        'HTTP_PWD_DATA_PUBLIC' =>  $http_pwd . '/data/public',
         'PWD_LOGS' => '/var/log/raspisms',
         'PWD_PID' => '/var/run/raspisms',
         'APP_SECRET' => '%APP_SECRET%',