From a9aef5e413ec52511785ab5e48d3e6f3fc76725a Mon Sep 17 00:00:00 2001
From: Alex Haible <52239823+AlexHaible@users.noreply.github.com>
Date: Mon, 4 Aug 2025 11:43:28 +0200
Subject: [PATCH] Set $previous as nullable explicitly

This resolves a deprecation notice in newer PHP versions
---
 QuickPay/API/Exceptions/TimeoutException.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/QuickPay/API/Exceptions/TimeoutException.php b/QuickPay/API/Exceptions/TimeoutException.php
index 26dcad7..0e9e5f6 100644
--- a/QuickPay/API/Exceptions/TimeoutException.php
+++ b/QuickPay/API/Exceptions/TimeoutException.php
@@ -4,7 +4,7 @@
 
 class TimeoutException extends GenericException
 {
-    public function __construct(string $message, int $code = 0, self $previous = null)
+    public function __construct(string $message, int $code = 0, ?self $previous = null)
     {
         parent::__construct($message, $code, $previous);
     }