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%3DyMHiJmzS4XoGQASttHIRqSB%252Fl%252BeFRK8h0myez%252FBSWd5bZ%252FNEH6gnVN9Uu2Kz25FmrrVzptA%252FVBV3UnfLY6ZDkSmD0fDzqQa7%252B9AVZ6pYAmK18sT%252BpCjy7Odth9k8bqqSHKTgBzHkoM7XTQC0vfau6E%252F9Zk7cDx8UHWt32Au%252FrGIXVxxu%252B7wtQ3ui%252Fn%252FQ7Z5Vaaq7e%252FhFGquA9F9OCeGtkw%253D%253D): failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests