It looks like this is a web page, not a feed. I looked for a feed associated with this page, but couldn't find one. Please enter the address of your feed to validate.

Source: https://blog-aff29slq4.mit-edu.top/post/5198720436

  1. <!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="390"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "blog-aff29slq4.mit-edu.top",cType: 'managed',cRay: '90face1a7e270630',cH: 'AgP6egFjW5taCzKzhaZDbsPTIPxts5aJEluoxR13jZA-1739176938-1.2.1.1-ro6ik8yakCj0SuYml2xYEBMv8VwasV.KUfmrQQEWImXigs3oPhMIll9hG7GNB1_s',cUPMDTk: "\/post\/5198720436?__cf_chl_tk=q8r3RfRiJk_hjzT7avkoknyfWTCe8XzjiJ5RKUPx5xs-1739176938-1.0.1.1-NQ1KPoX2u4k7rBwRf7vMuck8q9dWuhBb7901LQ53A1o",cFPWv: 'g',cITimeS: '1739176938',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/5198720436?__cf_chl_f_tk=q8r3RfRiJk_hjzT7avkoknyfWTCe8XzjiJ5RKUPx5xs-1739176938-1.0.1.1-NQ1KPoX2u4k7rBwRf7vMuck8q9dWuhBb7901LQ53A1o",md: "yGaT9zBMksX3F2vidZwc8wgBO8ulgUAleg7SzmAYQrA-1739176938-1.2.1.1-jpYAt_OlvChxnxP12TxMPfpvecvHsoWvO.IKVPvuP0bgs0bGTWaM_EZ8.j1dIjtw6CZjSYzR1qFXLP09vb3GeYk6QEmdci1E4IPlaEp_TOIUDhqFMs6fSSZwxRpazyahPYPy.HhdWhPim1U.v6SSnJTHtzaiii8xvx3FtXohFIDBMsEZGFEmxx8ILRzBstt06qEBTL6qKhPTAykykNK1XLVN4d8ZmCmt2D.hyVvswPZp0Msy9kX4fvYpbZ7BUIpJ3UHMD4tVwrapLQ_vY4eICZ_iYfPTHZu5S60guFOWHRI2a3viKBVt5qsBS.9VPjdfo3VZCFVVh12Aa.vHBqrsZIjljiIQuznGQdGHKn9Z6Bno_OdmXUSANc8stXnPsUHKa.7HtMt4cpXTX10AwQ.ntANG6CoaOyZWZbDhJT53qc.770B1aQt_Ou3daqTfYUHTeav0Y_FYovff1AgDu6tFwwIsdtw22so.gB_sV.SDOdpfhUkKYjsXGnjD2kejI_3bYGLQxFfF0mHuXmRjyilQPIQaFhwx4RS46_rK6azpOyS9yluOfFRWicCqI.mmtjOlu5t7HRChjWu1_U76UjTlxkTpkDrdWT_2GSkRvICybOwb.36zFQJOLLvI5xNNmDv8esuiNy6io0x92e0iHkeFZi0YVrMLA7vSc_rt1NXCsNpnMfRyXRoSX178cz8z_S39TwQikfN4JFBWCaisT1QIKvDmcOf3vPoo.zA_6kyUDQpKCLQ2HhSrluE95VA6NmMXL53qAbbMGH.zg9V_SAl7GT.TnJcZbIt3C3.tm58Re9glJw3CWgkU32UapINre_1AfjCFfhf4ecyen3FYKam55FuVaIm1YW3ZRrmtbwG7mCQpSxdJypAZLAAeJlIoN2RfXGKpMD5YR_7S8IayuGJihSr8BGd8UPIpbo7CMCAL1LP0CVQZmIfl4u97u.o4kKnrrsvxwwgw9Tn0NkkK1sQH.Blq8Zff8iCVMDNkIZ6VAmCCJk4age36MwbTW8vexsJYLXywh605q7OxxTXUPqz7J3.enLmxHj9FTmbWMifg1Z99GL6m_15MWQkhCHVdHG_fd3cx9NcWzErcyGsUquy.S1VwJyGpYn5e_DwLxCwgOiRZqn8tS5wwefnZUq8k.0CSyu48TbTJBmRJhWvRfwVyoEGFJfcOCWgwzkUfqNKWtKnvnQnuQKNElSCWgP3MbxBURJHZubfZs5OSo9YfVMIBaTJEr6qMXmqIaxXSMGe.u7Et5ucyNMMsN6BeoQLkD_vkP1Lp04SarxloAPNfomasC6YPKptx7Mnr3hlb5y3lwtHjHlI2p246Q7Y3pFIKVXweZ_YJhWO.dphxPSF4JsSKhlTCSJz7G6rssqz.ayNq4qH.zGFKZAVJeNtFB8L_VIfWeN3pK_nHTYGsPeQA4V6h3vaxwd1gsdRI7KwD_Eu579yAOBvInHFWYiJ4FtroLbjwyuQkXGJrpz68a2szra3hK5khBHBeTb3b2NxSCNqZOoxPRPIB52CHNT07LKDSLZN6fioimRrOUhcte9STYfBIerbE1_O1Qy6w99ahMZSraEJyM_icmLyOv5CjlhRJuEZHLPAd8Y2K7s7CkhmnK2EFkmlu4r4zi7KLX6titrEJlt9azLQZMHHr17CgxUffiw2Ik499w_jd6mg2h1MNoDhwdb0JwbLMI1l.jY3v6T00K36UwV3vM5C2y7IDZCXcECrAcXEQxET1xf82HTp71fyFUTsolVDpxOfcec24ee6k0GS.XNdTjHNMFZXDxAvdugptGcV0fJzhcIfhQU01IeQYISdHgcT32Hkp9t8D3bBx56hRuJqdhO47xCJdaZvytbTA_qGcW1JkycjVo1SY5gWUTRhHP_xv9X5hTb6P4Si4mZyoCQF3UtEO6yUw_NwvSjy8gX1TW_Bi_WDBUljYnsATaBJP1O5Dkz28pFQN0zD4XSNqFP6RRbt.nozo8S7kgsXYHzWPxd_anebfNMuUjpmA4trGiC09ExscsYLBUrvjaATYzDfBk2pd4U9vV7b5_7o6wu30Ubi9vaREw2aExRv9s29sakOCKV5LWBpaSkxNvAFOdAb0Fx3FBzkRgCcMsWN8h7G2vQeggtt3F40dVzM.0wXO.YQPredLzOkinyRl_yr1o1ijzu0pdKWiCsAIL4KdROZWEEvluGQQ13Sj0qlT7FFnl7Kv2iUfLuypi5MFsrCsPodDjOgTz.dwa31z50kK",mdrd: "rDWONCIPsTAiVbYUh7Mi6ZBtv99w07_QZWBcRzsUNDk-1739176938-1.2.1.1-ZXdq_0pia0J7JUWE1YdybIOg5YTR.xVZDJf6zoijclo5AXKAgXMhlFXA3TX69MSxc_N5Ugj8kMlXpMuuFcQ.Qv3xnlMHNJO4dQh6h.Jw1KTnzDSZ807ALWUKU149l4xAtWGhiGW0uI7QcBBVB4SMELUq6DoFD1IHAA3Cz2qHoIV_18expS0gzcCN9yx7p0MZJ04sE_J64qKXlN2kYX.bGIlqjLt_.OnwomPbPGYvZHbyWrZQ50q1lqAkNJje9Q9DwSkmnrzYvFl4sap5t1VNgiyU6JEqaUAQVO86VSsXYB1BIFpx0etKlfoRhOoNtvKGouw7YYWN6XJdtxd9ikxRko4tpt_x_PvmclAf6gADUhCd1pM_eq_6luK0mAk1neeq5k3NvaCBlbpScb0IUTiINo3L.udUfYOnnUjDv.SfVlY3QCWdkFZRTHsyU7b7GmFAhf0QysDQqcCNykTffer54vD.tnauxqTmGGHIN2JstOD.ZTNBvbBPkslHN5AsnOAwJp8GXE1CkJytYL9YTyYA1UJWA1Hmq26QsqLK8e5pv2hd5DiDrdNIhUEeb3OROtRcQwC2KqNB9ml.hsy71MOAZriwjRv2W.0BOyya9vEbha2E7jbxzH20rTmWQsH3profDiOaX43Hc_RA89AVCYjEKWxE34T5bnh1ltlJjJdnck8tMEVkBR8ngWUxnHHma.aRHH1wr0Q5CXoFYDoSVEA.c9kCvBEkk7.A.SdiSaQw84A.qulMYIw0k2iSKeo.HZ1pMszcNIaxlRhb_8RJYyHV_cYUVdDB68wWA5D_yWI9cxg9KlzuAnKbslzi8doPmijlro_jdfAkL6PvlF8UzJgecc2V7QNbZdooF48k.BXgPA_jdcc5nJsV13UPJTdBpwbpkBhmlQtFtbgnLiRp4gb0AsyXpfUZjNLt1Ty4mXtn5NOUStI3tSBZ7mzWhz.0ncSjrKHjdCQeLYf26PtSl6G76TGSMbrWjg7EL4Xj90_fo9ZzKiTw8APFpjvXimzd_cEV0b.4R104jvoYZVLkBe3jAPejuC_RGGVGkrqtGqImCQfu1ZAEP_MuiDfm5.SgJvP.xC4.zXNO1P7SBqsc8nGJCRsc_n38e2.IJfxHe0O4mBQqZPlP5XfCooN9Pas3Va1U7snQxCG2ECWjEuX0f1Lw4GMb0ABxC.K.R79AVMjXyF3NvdVl2X5HEvEapJd6brPxJVhk5IAoRmR5lMWPH0WiD753nVc9bn5ihng60JKzSK_hTl2oYcwaU0fYEhZrBvABTm2QBF6t1kttX3z0OMDk6y952gdQJjN76a1THFNYlnKjQiz9yVynF69MeU1drokXlww4B8WirMZ5CE5LkfvxRfV10FFrUmKxLDfby7olnzQv0BBTpyQ40FzxFRLtZhRlHL3enGUmm.ftWwAQPIzwm27WoOhFDpUoPT6jjicOfM7iTXbuqO8Ai4x4XjQbDcwF2n_av14lhUzIIjOOt0GSjxZY8VDkhyzIaS2vskhik9Zd695BZ_6AibLDbZP8wcdQbld.rinAHasetepR0qu_glYL5OQvV.U.TJjAAzaDQ6clYitd3ymkEaYQIZvtARBCxTV_is._2GGi3SUz00h.vjlxxyjTUc5r29mVnUgVKSufcftQS5W5ey4ofrnzNbWB1wXB.Zkm6wEjpDPWImKofMUCYZ_8Y5sWqz0R2an.FDwU0tluzeFHYfKgUwWmiytR0ofUgxyHV_ZhUz3bwwZLqNhjS3OqXUgUAJgPZDZFDNTpCvsjK0DdL_XgT0Cv32.8odm7lqP3qutjDZ6ueOMA8Q"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90face1a7e270630';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/post\/5198720436?__cf_chl_rt_tk=q8r3RfRiJk_hjzT7avkoknyfWTCe8XzjiJ5RKUPx5xs-1739176938-1.0.1.1-NQ1KPoX2u4k7rBwRf7vMuck8q9dWuhBb7901LQ53A1o" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>
Copyright © 2002-9 Sam Ruby, Mark Pilgrim, Joseph Walton, and Phil Ringnalda