From 455b6d8d23b112687ff83f73f7bb4c566fa19860 Mon Sep 17 00:00:00 2001
From: zhouaini528 <465382251@qq.com>
Date: Wed, 20 Dec 2023 11:18:28 +0800
Subject: [PATCH] array_key_exists(): Argument #2 ($array) must be of type
 array

---
 src/RequestV5.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/RequestV5.php b/src/RequestV5.php
index 96d1830..a12f04d 100644
--- a/src/RequestV5.php
+++ b/src/RequestV5.php
@@ -84,7 +84,7 @@ protected function nonce(){
      * */
     protected function signature(){
         if(!empty($this->key) && !empty($this->secret)){
-            if(array_key_exists('X-BAPI-RECV-WINDOW',$this->options['headers'])){
+            if(isset($this->options['headers']) && array_key_exists('X-BAPI-RECV-WINDOW',$this->options['headers'])){
                 $this->recv_window=$this->options['headers']['X-BAPI-RECV-WINDOW'];
                 unset($this->options['headers']['X-BAPI-RECV-WINDOW']);
             }