feat:修复api为空判断

@@ -99,7 +99,10 @@ class CmBroker
     //复制一个新的实例
     public function copy()
     {
-        $apiInfo = new ApiInfo($this->apiInfo->key, $this->apiInfo->secret, $this->apiInfo->passphrase);
+        $apiInfo = null;
+        if ($this->apiInfo) {
+            $apiInfo = new ApiInfo($this->apiInfo->key, $this->apiInfo->secret, $this->apiInfo->passphrase);
+        }
         $cmBroker = new CmBroker($this->plat, $apiInfo);
         $cmBroker->symbolInfos = $this->symbolInfos;
         $cmBroker->positions = $this->positions;
@@ -767,7 +770,7 @@ class CmBroker
     }
     private function initPosMode()
     {
-        if ($this->plat == self::PLAT_OKX && $this->apiInfo->key != '') {
+        if ($this->plat == self::PLAT_OKX && $this->apiInfo && $this->apiInfo->key != '') {
             $res = $this->exBroker->getAccountConfig();
             $config = $res['data'][0];
             $this->posMode = $config['posMode'] == 'long_short_mode' ? self::MODE_TWO_SIDE : self::MODE_ONE_SIDE;