Internal Server Error

file_get_contents(http://api.web.21ds.cn/taoke/doItemHighCommissionPromotionLinkByAll?apkey=ac4bab46-4e70-2270-2255-156b59a8b8c1&tbname=ieliwb&pid=mm_28179349_1691200061_110536850253&content=https%3A%2F%2Fuland.taobao.com%2Fcoupon%2Fedetail%3Fe%3DjVjJ7N5YHkwE%252BdAb1JoOOqLT9Gla5iZPtHPNdW0KG1Wh7hdQAGZN2ODeBDOSA9mxqQI68%252BbusYzUTkx%252B%252FOvUMqa92BF7%252BAmRKd3V1WDVc1d78ySbeLVimOdth9k8bqqSHKTgBzHkoM7XTQC0vfau6E%252F9Zk7cDx8UGcM%252FmOVXilliQneUx%252FQkV3ui%252Fn%252FQ7Z5VdCA9fbaIn4SA9F9OCeGtkw%253D%253D): failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests