@@ -33,7 +33,7 @@ class base extends \Exception
 	* @param \Exception|null $previous
 	* @access public
 	*/
-	public function __construct($message = null, $code = 0, \Exception $previous = null)
+	public function __construct($message = null, $code = 0, ?\Exception $previous = null)
 	{
 		parent::__construct();
Original file line number	Diff line number	Diff line change
`@@ -33,7 +33,7 @@ class base extends \Exception`
`33`	`33`	`* @param \Exception\|null $previous`
`34`	`34`	`* @access public`
`35`	`35`	`*/`
`36`		`- public function __construct($message = null, $code = 0, \Exception $previous = null)`
	`36`	`+ public function __construct($message = null, $code = 0, ?\Exception $previous = null)`
`37`	`37`	`{`
`38`	`38`	`parent::__construct();`
`39`	`39`