Make sure file class is loaded before handling exceptions.

system/laravel.php

@@ -61,6 +61,7 @@ set_exception_handler(function($e)
 {
 	require_once SYS_PATH.'exception/handler'.EXT;
 	require_once SYS_PATH.'exception/examiner'.EXT;
+	require_once SYS_PATH.'file'.EXT;
 
 	Exception\Handler::make($e)->handle();
 });
@@ -69,6 +70,7 @@ set_error_handler(function($number, $error, $file, $line)
 {
 	require_once SYS_PATH.'exception/handler'.EXT;
 	require_once SYS_PATH.'exception/examiner'.EXT;
+	require_once SYS_PATH.'file'.EXT;
 
 	Exception\Handler::make(new \ErrorException($error, $number, 0, $file, $line))->handle();
 });
@@ -79,6 +81,7 @@ register_shutdown_function(function()
 	{
 		require_once SYS_PATH.'exception/handler'.EXT;
 		require_once SYS_PATH.'exception/examiner'.EXT;
+		require_once SYS_PATH.'file'.EXT;
 
 		extract($error);