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%3DbbUnUlxRZXQE%2BdAb1JoOOnhAcdBdB%2F2uQEoTwKqhytCOOynoqP64GfRNWefM1rsroP%2FQ6K6XMH5XxFwdiG%2Fp9V%2FQsW9dOJF0bd76m3V5xpZ98iu1ivFva9r2HvKEmWmQuWuLH1QxQL4Nuun6Oa6jSYFA0JdVFDgqb8r9meGQHuSX2zIxmSHgYSCRSOUFl7t%2BwdWr93Gr8MBMmdsrkidbOd3h1FtNvlY31WozoFaXPfxS2ozkTkkh5cW8oHIM2EqCk28kM1wD31A%3D): failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests