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-aff1qq96k.mit-edu.top/post/8621530947

  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-aff1qq96k.mit-edu.top",cType: 'managed',cRay: '91103f705f06078c',cH: 'ATGuQlI8ItcQYSJVKPOcwDJt6NK2iWDTUcUxHdwTg2g-1739401781-1.2.1.1-Lg399Y12fUX0PhkRWn_fot4J1vd8IPfRyNZzt9QSdLqWv.e7uzMGRABaHT1.H15T',cUPMDTk: "\/post\/8621530947?__cf_chl_tk=mpw7lVVnq_wjTpyOn9zIZNaVjcZO5FL8Hr0lorv9oyM-1739401781-1.0.1.1-VJ_ZkNSxeWKmAHIwGQTMjDIns4vzRiua3m2EWJZN034",cFPWv: 'b',cITimeS: '1739401781',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/8621530947?__cf_chl_f_tk=mpw7lVVnq_wjTpyOn9zIZNaVjcZO5FL8Hr0lorv9oyM-1739401781-1.0.1.1-VJ_ZkNSxeWKmAHIwGQTMjDIns4vzRiua3m2EWJZN034",md: "9hsFfYL19MTy5NkFAYiI3KIYGAsadgaLMV.V_7J.S48-1739401781-1.2.1.1-ZNDSbGwf29VCztaetfdyhLVaIkcAR0C_2P2RcUluc1Grdy6JPmaWazdlE0hbX4PYxmQwW3uy.FjL41B0t9sPP2qxkhAphr9LQ.USKB5CS3jnDt4Z6VKWE6amXJrX3A80NrBfPjRcknpM0CJWIJS3zsVQjEDqNKjz5bx7qFPk3SZd9yXstn41z2Zy3wXKbLEPFqV6LYRq9_DK9n8hVrzzdrBPFXqua2lCSKj42q8nU1un2y7SyAW_5RCheWDXegpyq_jdM.7vW2Ubkqofx8yyWg49lRadQPltqElnTyx3pSjXG0oWxpvIv1CA_fwftD5s0dJzX3WZiYjqV5gL2ZA3OxXd06N5HD098KPv28AowlsvMgEpDPuTT4we4V.ShJVkSWgL8.wl5QWJnRjT_BXRhdApLVvCcRsz6nuopdeUWgFSoQaqzUruzlkVa1PzLAOHXWBz_RgtdRa1Ix6DXNw0364LndQESH.nmdvzD_QPRj0IrY92RADPlXC2p.0m1X.AJzdWZ6lZyuFsyIDO82WrT5WzU_GkUZEOOmZmKZwP8ugSQJJ_vMeNs4OaZ8zc9.bsUB47xFchrEE2yzqiF9342dB2a9j3umC0ycM980ytX5ARQbD_73Mu5MtrwwdbZqfSrPq4vtZrXA5A7yODWXGmmJvaLQrpIIxS69m99G_ZD4eJ2K3c.fd0klbgJCZXAdIFDD3IlwHRVKjJ0vvK7M0eO27xdbYFbqZTjOjBSI_VoH_8LtdlG3TaEXblQ9Dd62hGe7Z8mmveHMKuImzItyv7MoF.UeM4FyRNPScC_vayrmKJ799weGTrkBjE1B6Baa78cDaI.9DVGrNLhNuvLB1jMN5DGfXAI_0ZT3tY4uWjoIjCgUGcGTqaMh.wL5oy08vgEpqExvCcb0zBm6iCwGNMvacMcp7mytyF5SeTK6t_E21h0giNA7q4_97cvTaQJJlAThA5yzCbO4zP3rJ3e8jSE29x8C9h1j4YHk1c5codNGzaGVDn4m.zHfzwh.gRjR9TZQm0nMh3ZwSIryLP0VN783Uz4g1LJdeylwr8nbbH0FOfL.dlMwL1JgcFekLEaW_aEhJyBHSN9Dks0VG7mIXwZ4r868mEFNvy3qohFfKa5MqENsad3S3FytgYbQlNt2NZ8pvcDql64C74_TOU4E4OL26HvRvywUyZOonf5D3afertNJ2zpyW23inImVJm4vNHSY6LHtG1MGCXBt7.Q91jk3WTWkZ.vOWSk6lW4S5wsNGMzVnwj7DcH.v4AlwJRwN8CeC7ll3XGbwY02AiSGd0FYxGyno55hLgegIg9tKZVt3KzEH0cxekaiu7LDI3yMhsTO9_ZADELPuGay17Jidr0cpdhrvrHhV9QU3whJCC9yepMuHz3O3VAGGaZcm5lIx3izx5kC8hER0_xy1d1eQmvKuLkSIid6hOAdLqMhMl1lLrBHYzkwGMoRi0nVEddfVAZ5OmI.YPe.0i854euyIERrFj8wtupgtMsKjEVp2ZiPeyVckfu.JiZyNn5w0ehsB7OoxVgwCDFX1Ws13aIKLwcJ2gKUBgBN.fodpQzjgOaw3h9WiB8owLBcrE0jWwftC8Sq1CEmFI_WC_OOyAPAvlztPMpVvDD3Sx0S39kS2eVDvm62jS6IqgpHq7HoTqdkidJQAYRw85v6YdMYyVN9X_HyQaUszYNjkA6l4UB.IjAAkBrwWZKPIBzVA1.4Nb_hUkiyIsrDL6LU9MtfRurju1ZsJfwu5vSIvUNUrX8X5Ckh6mkmz3C8nQWXAMXfcy2Eo.rvfOuUrdFDfhRtBU5wokFboQiR_2be8LEz0_R707Y8fXNZSwhrC.d8TXFKiyNlcFPv85vRpfszKx6XM5Ggjb8.WKMJ6vpk6aT34iuyHjR6up3Io70JFCf4qA2TOkcICzwjFy728Hov4Yi47gJAkgGfTSbI1Dwb3dzSCsEWJXR6lD_ePQdbXghwJSCiG0pfdWT0F39BarvIcGzeoHdQU0e2hg54vj7b4VYI.h89zB_yVMkq01EMFQ8ktFZR.VpkziCurL9YAq18R5ESKBn3VD0mkodSCm.fX3xQmJxyRk9x5reTwDhxU7EXHObzIahPYh6hyl7TEWhoaU1zaME5UVvzx_TEmJU1lUtaA0AaF708CHwodqAD5UiawV5vlNleZB07jtSmmR4UqZh2mO4gSPck.mNh3vz7uaTaI6UCXapMY3cN7MrAxjdQ4jGoj70174",mdrd: "eHLFUartluCaepomiwX755GQS0btI382nsiJTQmS0lU-1739401781-1.2.1.1-E10siBnTsPO.8cduqjQcz332XmiMkRqobjYxRc1U53mlNkiypsU9RFjF.mq8CERHPtPMeMaQ7FFOWGBKY2Y5qRJxo_rjE3ZxsjH64Tk.C8yD84Kjly70cMYB4XkFQ2yKLIXHoR8G9k.GOyofgk242cV.ryKkOYFaXOQdWJxLRzqK6kMoM7chBdp9o6USJS5VjVkEql.ESLdiy6UUxw0yDC8ZKqAaBnN80v__D2XcPiSheuQ8_lsETXiJWwRqL2NDqRzQfu.yGmuSyghY1F9kriZJGqLQisxxdLTP1cs1wLqmHID0okSSir9OThBwlmmtBPCsQ7xBNvyWcxoniNFoaEqGpXZNzs6ZwliCoMPGa4OJA0DkSQwv6FRsD.xNuqQxyreR0bpKSyOfeDALGg8h2GF1x3uims1q1GilVoJ6A.U_vqIz_T0DBmDvxa6Oxn0xnDCtHjU7RUWy4Az2dUc5UwX.xVxrtKIyUxmmn0COZ9mmmhrvd2eDq_Nfr62ixj0TqDD76GmZtJ4.8N5tihvCS9EjIlfizmRbNYJ2W.gyuU3rm1J3bcm3UQJ_jQdoOp3SvhabOVoiQZGgGWY7IB_zELWpQxlwGkJsbGZ.f._qjt0jaIFVBLyTAs1hmn48qG.kx3yYTVvrug86CJx4tM9.x23hAiVmD4Ho.rgUNRm04hZwgtiEdIQxg5e139qMpsxgq38W5MIhFK4zDC95QusUugleMhUvFpduIwA3rn4jJJMpBjX46rdIKe2DI7Hx9NSh4VnIbstbro7PMgPNNiV.rOXfAW_jqGv6fWXtYxO2TyDRb5zWPYG87qJ3IUXN3oFYs9RF_71xz84eMyxis2X.TsbTXi3WgimjyRtn9cSphpJiIVE4c6P.7egiIB1oKxBmwfzY2N3aKgWUZVcl54xvhtYK5MQg0W9D6d_8Efyc6GWUmbWDwva0dzV7s0XtDhZdx9ApoGhIiZgjDUNADCGhzQIuC5J_bEPTjex9nnWRARaAcN8IL7JI8Br6W0KXixCEA0esKZRfk_qSBbEjSUFyCW3xxvHSO5azyz_pj3aldr_ZxcEg8xabzkJTrDs9N9yJ8N7NKW.DHJraWnGiO1f88voc.tCY7C3uPDpTyYH3RuEilviyltPmDheCng8bWT2lngCDt5NQFbuXC3WQXtBGljrTpLvgQNsSN16Y8sYVCbTLSLsIDIijGDF2L9UJpewo5gkilQHxsTTSbW16oU1j1uo2y6FWBjklWvEvLddXDYIunk0PnQGo2vUD0XYvDD3k3Ib.rD9b0PQEKhlxiR.C4L7DSdWJpgH9SglHP4KfZvmLNhfsl.ghgvs2sdIQs8FZ3XFZGmhve0aLLvhxOB5.vu4yP8quW276Ic8jdd51gpjsaTekc.6k46LJ.541WqwtXFA7VQ.zn73T.3ktJdSVzOViGozmdhFMX5TNMGUuDwaMnSXxgUi3Z5Xi7C7_E8vpR1fS2PrCsHqg2OTzxPPG6oX1NzRBW4YvAsiELse1nUYyJPUnVLshzgw91lystaEtXWXw4o5z6Z5rwGCowCTnnn36kK30Z9HbnRImAM.qxvO6jNTBp9N6zfdwwkWtIlLDIENE7zsWieaaZponCednQfZ3jZBCsqOR94HeQuNXscugflr5Dl3JMjiEyAuKPLXYPdf3WwviJ7bFp9DXDM2rnHzROdAL_wXo2DoeCvUPMaUbbE1DOzB_gYA659ifGcFf_4DJLkyrB9C_HsgNDfwOh1ytOhjmdX5HOCnAez7IfLHf_vecnkMyBkjclO6PMtvNqB0Xaiy2NfT3Cj6Ng4tqyXvXbkljwgBmPC98Ve43xR4"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91103f705f06078c';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\/8621530947?__cf_chl_rt_tk=mpw7lVVnq_wjTpyOn9zIZNaVjcZO5FL8Hr0lorv9oyM-1739401781-1.0.1.1-VJ_ZkNSxeWKmAHIwGQTMjDIns4vzRiua3m2EWJZN034" + 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