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-aff447jx7.mit-edu.top/post/1239684570

  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-aff447jx7.mit-edu.top",cType: 'managed',cRay: '90fb2f171ab8d641',cH: 'eXE.EzCAdJl4FZeZ35eZqzxgDnRnX_j3JTc7uTlsrow-1739180911-1.2.1.1-5UdgpyGGhIwk80GUx9_dooYIlRk72bOPSo2d5F0DN0SVgWpnJyKsWRGtrSZDrtVq',cUPMDTk: "\/post\/1239684570?__cf_chl_tk=dRtgDLqwam3R_oJzJHII.37L3wjZKOmRWCld8J9qSac-1739180911-1.0.1.1-fwBcYc6Vf_YADtodIlOwSEd3S7.jczGDpOv8I5f_HvA",cFPWv: 'g',cITimeS: '1739180911',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/1239684570?__cf_chl_f_tk=dRtgDLqwam3R_oJzJHII.37L3wjZKOmRWCld8J9qSac-1739180911-1.0.1.1-fwBcYc6Vf_YADtodIlOwSEd3S7.jczGDpOv8I5f_HvA",md: "kHnPrsQTgoARVpdRzGsQFJTrtyzNjsNYJLSVwBin4TQ-1739180911-1.2.1.1-9CkyUhj.GNEX8LD6PAD7rG5O5g4o018K3zQNvQSoHYQo6mrU1vhPVrlt0_I8qeaiFN.fkS7TpLx5LUl5WrQ0SfqLuLrnprCSjiPt0jMhLPGsq0h1pHrn5ToYlhj6cn9E8Hb4vWoh32scR7Psps6inO7wdI_.A9KaFb8k43R1mlrGmajJMEGx5KNui7zrgmiGOwXlquFRsEEdL2Z7BVuPASdOyKiwTG0fbBkd07o4BfFv2T28T5hL4WGvUvf9AnnISr7WSoOOkYRENal8o1JnnXVg18M33P8dG.KpFwISvLmE9WXyeqdLn5Nb2mohQp0Lho9DZUCLiBFDQW4owx6v_v9j8a8fVhApHgNXyMpb7lYXtr3uvKtvFEvZyme7W_NwQbCDeUr4Ug3HGekO4bmwL4UhJzLMP1hUjiN1jH5zSIPxI1fmXy7I.MbnN6cc0UqDCNfs5VPJainbQWQbXJE_sWwZwEB_mXKQ2T7kWoNt86L4aCdYTS6khaCofZ_QNWLmu_XBjsZby_9vZpCEZL_VUL5S4Kk2FNYn1YD3wp9FSI2IhwDjqFdSybj3rgDkDzlNZVs1HBYXAzf66urDVs6ulNqjGmz1FeZH2XgiO19xX5BcaPRRkPVlojK19y39QrhXaGpzjO6pM8UxvxD.psJQtNyJKt2NKptsG4Dc_bO74SrUZfL8Oux8xyCW_HUN5kjcq3RX63SL4rGMuGcF92B5DPYUp81YBCqath1HmnNlBbBxmwhpeuijz3rzLxLcz3QNvyatKOdjZDIiKkgu6H8upRLPaXjgi4sFSeOKWYOJOQE9Q6Dvv8jZhLels31QCOuHF8cTZNSJ_UeknAkpa6MauLbIY3CnYkcGox7FKLcS07H4BjwqUkDozKCsI_vxt_Cj_.AWPaZplinY2t.zFWpe.XT9YlPsTXJQqxPhuPynveVRGdtLL6FXH9Cw1axaYcFuFwr5TtTMd.Y9NouaGptUC0j7Fv3LYjTtVtLDa8wu_CyVLkQ7nLK0UZsWyfxndb8Uqk1Q9pCg.2I.lfUGbYRmj6pAdYSFWntLgC1Xau3EMeY_ryC_6zvM05DdGJiOfGwC3dL38dbPiHqMaWGWH32PCIUeq7PLMe0vI6fQ8TFxkf6MHzARJTXXH0jXxelF2DI8UsJypifTL28EzA6ViNpRfu52YHsAR5jybwDuoe0LQ6tJnlf3TkzmWZdUAjJwH7ZkGnNMh7KUZirGdFd5DScB6OTisaO3.SHD0XvMD2TfT_SihSX4.GZ3q1eUY0Etaq38f1hyvaNl3hO3UNg3tNZc4Axi76bSW8ofNklB2EPE5a6QRwTQdv.3H67CIVaHYXaftORFLmujGHilXbPROfXLtUIbsdT4BF3gnmXZbFkhM._1GwUyFGzdgb20nk7iKDjvZiUaZiibF8pSLcoCwjZH.J6usMiqFuP7Gg16Tt8jdb7W4DML1K0LVac7itQy84aOgsj9Jad8b0OLh9QCWg0AFLYPWxPV7URKu8tXU0o80V6ZC5XPzrMbGhfYOSw4C_iFtKa.lStmTBhan7ctl5ajJHH1PpEjdm7uHpnZfnGjxpiIqFtLso77DjF9CoaDkUO08a_whMDdz4fgP7i9R36ypZuGaFcgbXZqu.fr0OvOIcQ2IA9MwV1dDAG4V7sSAXWpmd9CMFvQaQr_duiCfdLHCRWnNgMmlhGcj3j0mJY9O2Gk9e6SrWean6jji0XirN.VLghUdf8fyWeFPsKYlU4KMWt1fUMiFoEw7_rqLvEVMX7QNsShpCARXDj27pHz0qaDhNPjHEAsdmsGQtjvhRFXDinNoRjIitQM_i4jRcpNtTN8xtgEXmtJU5XmLvMhfvM__ziEiUbbQTEJebOnHqLcZrvKuhoBTavCnDxTUZlE3MEUv1kYvGyPxGcH7jXBPPrksUo8MfMSGI.zrqLnAt.rb4UfY2uw7wEOx2VaUrfsq555sMVrWkfiosCMZKokiESW0QNmlTZJ6our6EOSz2SURdI.qfqhNo5_9fP0ICQfBBLVhquXDKb7Zm8VJ76RVgUv5Kkfg2DMX.AQCABDYoDr13g1AcV1N1F4kAZA6ceA9uJpJ8fnPN2RWbFMPyb1hzBLBndWl4_rHIe41oUlAcrbhwwDlT95UHv.11WAm.M.QlVyjF3o4Z89eCGCuByQu.hfhSszMuaYm85VH451eH1bUxLsugMyEougGSdYUmH4Jejz5WPZMa35LVM5Vo57_6mJ",mdrd: ".freJdRgRykGLWSBA92yGA9MkfDM0QHActf39F9wAFg-1739180911-1.2.1.1-FwOx9E8puR7zGCaKva2Xlk6AxhQeRRJSoyrVzDa7o08bygnoVMydmxZu0iyf_SfNq4wPrwbC95R5zqyOFlzRlvOdCWlsws8FEfTtz6lYyW7tjvtI1yuwHiN5r7b1mcFt.4jLr7PVOXujh.yvC5rH9IeNeVbPJY49Kp2cZPCFxCTlbWnl4w4JInO47APEBbx011nkQqM5kc1FxISjOTO.RyKB6Viwu1W5utTzzJFpt.ltVfcn3K41RfAMwi8UOLa17_O7hkDuOEgClOx.8PO7ZdzqRIgH2gBp51pDx2Ph713EV2RnSLnqL9TUWH7ZUb5bIOKiZ7QyAZhsH9NL6OrM1lCDqGaQEPqRod4Kp3nD6WPDWEVAkSobZBzCJ1vREt42lBjkWF.EGhz1l99j5kyDrshH6GebJftHQqp0JqjHjBwOXt3Ybcsq3zBty..4zWYa4vQMvLrgMSncGHrvT27h_qu8pu1VDgxTQIJ.RNXKD_EFtLVHvOKC7BfVdB3bNGeyUboyXHd.4oq_5WU0sXA7QiY09482sPJ55H4IGDe9jRi5bh5ms_ZoxppOziYkbShALGBZQlvnfIEIEQJQCWkCuVSPV6mkjqLUU1n37tUMADdVryAQhWq3DuJSC.ISMyRH1LBXdt5ezZoxPkJwNbO2vJH0imZjdxDS_bdXmKpZ99oYML0gij7tXm3xkIhN3vxL9WQ9jRqLB_WFKtJCZeHmN9b0WouuaT3uHpImrjeX7sbWS5HQI4RMPU4dvjLjPPKMD2AftXOXqEIr5RmZdwJpO18weQ6QD_qzyn5MS3fFTJlLSUHrI9uMuKEgSKOAmNhabg8J43K80xBi.R4kZiA79WHPdEWgDFPVr0QBQbHXIY5RFZTPaGhTe8.E9FoXN7RJ1DJbf39c5fettmINrm3MNbhbYjxw2uA0BaMTd8uTmWLSzonaluy69.bJomZRoPetRs3MYflxHZ2IFW_IFsWrHKlLs39e1HOpC9XZKPUGh6P6LqHm2V5MlZXmpbFyIFBWDgDExXcP7bq_PHztu690_4Zax8RsWThJNb9l_6ncREzHve0ni5NptICspuZMK1uS.otlAHinCrYX_enpG9DbCXUbq8y8iG4kEbpBkkpFVByUhm9yg7PH1Bpg0yH_cU0egqwNjQP6Ljrrp8EJHGGloFO5HKKzBPfEEKQSByqmK6RD01_hEbLCtu6s4jtJKmthR39szvXaDOu9n4dPrXvoK1j2wKUc_3tUhp9fdKfkFRkUHADa04jS6xhjU_cL_g94Zsqu9P.SQ5IOGfjsF.gW_8a610Bg1eu.aY0.M9vgQ1K86mlOWRgX3F1yNfvOsYIc5Wis746SQwy.LY84TCEshZNYpv2CayznIiTYdRgnmL5UON30Ocb7xZJbEj6e5vs5d9mYlRN5nftWQENOpBdjqMkBBvpVYIjZyKZsHGkDz.nAr0MEw9RqJUvkInFng79V2qusxDRHYaq8Jfb9cbvyC1pyUestlq_gswyAOHvfLHTt9GsOd_jmb5zhjE86zOwDczpKXHZy1FvZ5EGKVfJqTKrSlFPqg7fEHhyLZfMiw_Dh12WKBUJJaSrHw.WNJGWIHrYHO2SaMwnKL_C0tdcbk6CizUkb_5Ev4i5LdeVaeVEnYd6UKFvA8.__mtXVAQGWs5Hvm39NNkQm1oL8j4xhmbsCpZuUVsgnGWrGNowtw4oH3TKrGQ_8eSV9GG7ftumjkdSWrKjc5aol0xrzL.0LiLN1IvLw1lwD0akd_LTn6budFGWt.NcE3_aca9D8Ei1fuFTxaHCbB90igQU9OToNpf5ZGjLOC_NcPIzr.7trXMo"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fb2f171ab8d641';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\/1239684570?__cf_chl_rt_tk=dRtgDLqwam3R_oJzJHII.37L3wjZKOmRWCld8J9qSac-1739180911-1.0.1.1-fwBcYc6Vf_YADtodIlOwSEd3S7.jczGDpOv8I5f_HvA" + 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