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%3DO9O7DvXuHpoE%252BdAb1JoOOrpDSMRmLagrl2kuX3cZI%252FTQ7Ti8pgp2iXfp0DAFi88Dv9k6hG24A%252B%252BxmElxJHS5Fji%252FXxNzfJE0hy%252B9YdupvEKtJZO2YZEVZQD6sveRqgBQF6Y%252FSGkgg%252B%252BMOmm%252BVf6hvw2U0kG5qm9DYwOD23XOnRHtu8IRhPCXFqfVH1yyAbpoWKSI%252Br%252F7snMcnKZ2kE%252FL3qJ7%252BkHL3AEW): failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests