feat:修复k线获取

@@ -298,9 +298,12 @@ class CmBroker
     {
         $symbolOri = $this->getSymbolOri($symbol, $this->plat);
         if ($this->plat == 'okx') {
-            $klines = $this->exBroker->getKlines($symbolOri, $peroid, $limit);
+            $res = $this->exBroker->getKlines($symbolOri, $peroid, $limit);
+            if ($res['code'] != '0') {
+                return [];
+            }
             $newKlines = [];
-            foreach ($klines as $key => $value) {
+            foreach ($res['data'] as $key => $value) {
                 $kline = Kline::transferOkx($value);
                 $newKlines[] = $kline;
             }