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%3DQPXAl9TWsGEE%2BdAb1JoOOrSV7nQ9rgXvQuFq3vLjHgFbZ%2FNEH6gnVN9Uu2Kz25FmrrVzptA%2FVBV3UnfLY6ZDkXVu33ShYFodv1%2FAHDBSKqU161hp%2FSvFAQgl0niPEy1RwdWr93Gr8MBMmdsrkidbOd3h1FtNvlY31WozoFaXPfyQrdZfo%2B0%2Bh6TBjOQAfSNrsUEHNPzKoP2wyNdaJeNFVQ%3D%3D): failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests