为什么其他交易行情数据都能获取成功，就郑商所失败呢？

====================== 品种配置 ======================
CONTRACT_LIST = [
# ========== 上期所 SHFE ==========
{“name”: “螺纹钢”, “code”: “SHFE.rb2605”, “exchange”: “SHFE”},
{“name”: “烧碱”, “code”: “SHFE.oh2603”, “exchange”: “SHFE”},
{“name”: “沪铜”, “code”: “SHFE.cu2603”, “exchange”: “SHFE”},
{“name”: “沪铝”, “code”: “SHFE.al2603”, “exchange”: “SHFE”},
{“name”: “沪锌”, “code”: “SHFE.zn2603”, “exchange”: “SHFE”},
{“name”: “沪铅”, “code”: “SHFE.pb2603”, “exchange”: “SHFE”},
{“name”: “沪镍”, “code”: “SHFE.ni2603”, “exchange”: “SHFE”},
{“name”: “沪锡”, “code”: “SHFE.sn2603”, “exchange”: “SHFE”},
{“name”: “不锈钢”, “code”: “SHFE.ss2603”, “exchange”: “SHFE”},
{“name”: “热卷”, “code”: “SHFE.hc2605”, “exchange”: “SHFE”},
{“name”: “纸浆”, “code”: “SHFE.sp2605”, “exchange”: “SHFE”},
{“name”: “沥青”, “code”: “SHFE.bu2603”, “exchange”: “SHFE”},
{“name”: “橡胶”, “code”: “SHFE.ru2605”, “exchange”: “SHFE”},
{“name”: “燃料油”, “code”: “SHFE.fu2605”, “exchange”: “SHFE”},
{“name”: “沪金”, “code”: “SHFE.au2602”, “exchange”: “SHFE”},
{“name”: “沪银”, “code”: “SHFE.ag2604”, “exchange”: “SHFE”},
{“name”: “合成橡胶”, “code”: “SHFE.br2603”, “exchange”: “SHFE”},

# ========== 大连商品交易所 DCE ==========
{“name”: “豆粕”, “code”: “DCE.m2605”, “exchange”: “DCE”},
{“name”: “豆油”, “code”: “DCE.y2605”, “exchange”: “DCE”},
{“name”: “棕榈油”, “code”: “DCE.p2605”, “exchange”: “DCE”},
{“name”: “豆一”, “code”: “DCE.a2605”, “exchange”: “DCE”},
{“name”: “豆二”, “code”: “DCE.b2605”, “exchange”: “DCE”},
{“name”: “玉米”, “code”: “DCE.c2605”, “exchange”: “DCE”},
{“name”: “玉米淀粉”, “code”: “DCE.cs2605”, “exchange”: “DCE”},
{“name”: “生猪”, “code”: “DCE.lh2603”, “exchange”: “DCE”},
{“name”: “鸡蛋”, “code”: “DCE.jd2605”, “exchange”: “DCE”},
{“name”: “铁矿石”, “code”: “DCE.i2605”, “exchange”: “DCE”},
{“name”: “焦煤”, “code”: “DCE.jm2605”, “exchange”: “DCE”},
{“name”: “乙二醇”, “code”: “DCE.eg2605”, “exchange”: “DCE”},
{“name”: “苯乙烯”, “code”: “DCE.eb2605”, “exchange”: “DCE”},
{“name”: “液化石油气”, “code”: “DCE.lpg2605”, “exchange”: “DCE”},
{“name”: “聚丙烯”, “code”: “DCE.pp2605”, “exchange”: “DCE”},
{“name”: “塑料”, “code”: “DCE.l2605”, “exchange”: “DCE”},
{“name”: “pvc”, “code”: “DCE.v2605”, “exchange”: “DCE”},

# ========== 上海国际能源交易中心 INE ==========
{“name”: “原油”, “code”: “INE.sc2603”, “exchange”: “INE”},
{“name”: “20号胶”, “code”: “INE.nr2605”, “exchange”: “INE”},
{“name”: “低硫燃料油”, “code”: “INE.lu2605”, “exchange”: “INE”},

# ========== 郑州商品交易所 CZCE ==========
{“name”: “郑商所对二甲苯”, “code”: “CZCE.px2605”, “exchange”: “CZCE”},
{“name”: “郑商所菜油”, “code”: “CZCE.oi2605”, “exchange”: “CZCE”},
{“name”: “郑商所菜粕”, “code”: “CZCE.rm2605”, “exchange”: “CZCE”},
{“name”: “郑商所白糖”, “code”: “CZCE.sr2605”, “exchange”: “CZCE”},
{“name”: “郑商所棉花”, “code”: “CZCE.cf2605”, “exchange”: “CZCE”},
{“name”: “郑商所甲醇”, “code”: “CZCE.ma2605”, “exchange”: “CZCE”},
{“name”: “郑商所PTA”, “code”: “CZCE.ta2605”, “exchange”: “CZCE”},
{“name”: “郑商所玻璃”, “code”: “CZCE.fg2605”, “exchange”: “CZCE”},
{“name”: “郑商所纯碱”, “code”: “CZCE.sa2605”, “exchange”: “CZCE”},
{“name”: “郑商所尿素”, “code”: “CZCE.ur2605”, “exchange”: “CZCE”},
{“name”: “郑商所苹果”, “code”: “CZCE.ap2605”, “exchange”: “CZCE”},
{“name”: “郑商所红枣”, “code”: “CZCE.jr2605”, “exchange”: “CZCE”},
{“name”: “郑商所花生”, “code”: “CZCE.p2603”, “exchange”: “CZCE”},
{“name”: “郑商所硅铁”, “code”: “CZCE.sf2605”, “exchange”: “CZCE”},
{“name”: “郑商所锰硅”, “code”: “CZCE.sm2605”, “exchange”: “CZCE”},
{“name”: “郑商所短纤”, “code”: “CZCE.pf2605”, “exchange”: “CZCE”},
]