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-aff80y4zv.mit-edu.top/post/4590167328

  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-aff80y4zv.mit-edu.top",cType: 'managed',cRay: '90fb30581c2fc94a',cH: 'ZfTS6oHCmScoMKugy4fjQ0wSjTDINB_0uFlh1GudbEE-1739180962-1.2.1.1-zEmoOoqYL0MQG5xW5HrST_IGCoUS2r0mHh3f7fX7jqWxqb8_DMgN5nX57EyZ00Bo',cUPMDTk: "\/post\/4590167328?__cf_chl_tk=negJnq2272ITCxHxoO9C3nBGL.ACh7XCcwQO3HeseMs-1739180962-1.0.1.1-z86U8dCZrmTT7Ir.Byr5bhq7Lb.UTO0zitgKJ08L7tA",cFPWv: 'g',cITimeS: '1739180962',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/4590167328?__cf_chl_f_tk=negJnq2272ITCxHxoO9C3nBGL.ACh7XCcwQO3HeseMs-1739180962-1.0.1.1-z86U8dCZrmTT7Ir.Byr5bhq7Lb.UTO0zitgKJ08L7tA",md: "r_Kstb6dGUEXyCx7OxvvmBGfWKv2I7tSwCc9i22jLas-1739180962-1.2.1.1-EQOH6cNkW3ORtBr7jdIfX3gOQbY_Aj5eyzHM.tUAlXhYWrfWb1Dl5YC3auYXpD.sCLeU3J4I1cDi.SUH04OlSNbxj9TFwDvz.1gz3Py6.Th2QC3GC5vxLGaiA07sHoT0Z_p34vcjhDKwZyMd52LYxixNi27cUQbVqkMTWzluydvSLQDvwWZ3LBq2ycERXxzUyICgsdQYi7tP_AYHd29TkbxT3Q9eWgaSo17_bGx7nZ8.mDtdPHOssnGTbk.VAPpDYHGOeAX27Xv8oLVqIVvK5TQFT25oYvvALQvZN2FvGts8wv1eCoI31jWBgDPu3VEiuDO2WkCJSGEV.Xr_Pk8bgQ54feV3W.HU2NWtbKFOrveztX1PMsxVbPfYyZ8p0I4Lmlfz.F0MBFxcovxdAa0S.ZXTrikC6PX2td.qKuB638C0_bLTTMmeTavqOXhIw06_C022oglamIG7gz.c3PicdnLmZY3UsOY.luM3cyjjpCfFmTItGSvGHmm2SekHxBxL1dos4QkHP8G6sMdUW2x7m_hGGrAlNsT3zQvv7kiC8RITwF9OX1nd8fiatkE3nUAv1sN9jmJjnfAAIxGTj2sW5YuOjiSJRj9dNVV8iA5ssBYcYiBwtF8Kp.kOi6qk59NxvCLUct6sablAbL9WMkY.jNrFU2TUykxJLqYnqCB0ep5TuhbByVEvmQM2jrPcOdn5Hbgt.OKzEwgSYEJnZKI.TlSQVvtiRKWLdB0KPoxxK4XPpV1JnZea4gKcWmbwIlZGlUq8jTvJ8MwV2OY7KTYwkmKQJbRT6_d.ocd8QnRQlgDc39cfRqd2_LhXxF6PYLsimGI1sGcBxRmWyyWdlSZQ9yddwjJlnzR7VNjCrle8WGlKoREXYlF7X6Tr5y1musM2.6oQe9AcZ5XwV.TrCihiUKHINTBhZc4PulEoBnPr1EMTtPvsIVSzDKWxFyM43VqSK4T.EQIHmRDREA.ZolhkmYj2Y4SLO3Clua6.RH7HceEgF_WJcfx0cCkwALaX5fi0pNWoW4a4ophJPRtlw4NmSXPr6SumrIHnRxQt.aeWdSyh79RmWE.qeE6HMN7uCV5pcJDojSavlBGnOQoY8hwXMlY087EVF5BU2loR1I9EEZkJRMvRW6991zNlBnwQajFt0DHY3J93La27DLCqYEMawQgF9PCO6uWqTINHrCi4hjkI8LN6n6zNrhFvXCMtCDvdnz_NuU.EpipzZsQFGQ7BVizCSA4_6sih.Pwtp_4_NhvtKvV8xfhl0nsKC4nDaVziecu7sTK0bcZh89Qv0S4dAEDSbZSv808sS.iiOrrvsKKVGVDruaYHV9SJfWoF6dQUba6ScSbu296UY3wyI5lIGxR6fFsf47syeQhiVcEeQ5NOZmNpX2LG0fpgbO8pD0nqdknkNLGTTzPs8kcT0hx7k3FvZ1uid4CZryUuhpX_rFd1o00nHprv33Qqo9MzFpI6S2pHANt6V8TPCtejotfgzR6FNZ.vuMfcfyfg0JHiovAn4EjyvIFw70Sb9BACnPSDGMtV7X7qaA7_8IH7ozgw.eSztkN.gq7n1oLVtBfDbG6O6H0Bj85E4mClMSeDoeyeKTY5QZEXi5kC8hr45VxKJJgjhyRmtJevtJPWr.7bFDE6ShU1MMrSH2sLkfLC0FFd5ZfzN98S9u8nEBNa5TC82Q10_hvlbLuooLIIkSSwGF7Gg443c.KYqXXQ9xI95YW3Iqh2uOUX6FAcx.R6hNoWwpS2odnWD2IBFs4XhVyhFU9Zc43Ulk5QzY8sk.UEcT4WFaRdiCxjwvIkF65rOR1RlvU1wE0Q4wo5sv66s4OlySKkV37FukTilgMAfk3vSXjRjvjGffc3WEQ0YuoWn8JLlflFVxT_a2gvAJ8VxzQcbetva0nEKswfLSbj_D6QrvMWOJyQXjzbMWwUB3Miv3yGN4p9r_vJ_mi2jmi6EzgYlVy6KplqyoNDOjkBPz5y1ZUKfegGE6wj0PDg7uF8KTLq_DlOeJRW.9TPNTOnc3tz2F9PsONgPEX3DBjS8geF8q.cmXo0bKsaXIXSNm88rkGB3dGpCAUG7jfdXzVIgTibMUay_Bifi_OD7pMy6HNiX..gA1b7nRwcfmWHHjnW6EvblNsRVS0434ff9enMhLER7GbikstFCMhMU2VL0keBc3Q189xDmnRTg1G8993lvfdDalW_OPkqffiVpDjx89z56RU_T5T3Me9MeyLU4FQ6wrYS",mdrd: "U7M8El7Wvt5Oa0GLAR5XkrlYi_aK3BYhd1E6ugYUyJ8-1739180962-1.2.1.1-W8KeRqXfQzsrtegxE2HKagdLxSjxxQkTvJeySyKf7_nWbI3kfFGr_Rm5Y9sAhyrTsCYJLn.hjXcVjE0nuPsxm1iXW2tLSM42qdeEaWBwVzQQdTAbhUbfUMlAyB9KWCtVEwOXemc6y4Os9iIz9_Xe0TjCDzzHFO1kj.kTpByJjnksXscHzqZnvzwOZDLFc5QA91dZT513JI6PbvHSL0bo_dAuusw0nM2JO_D3y8kyq7HbYbuWSN.SNOBKZzSF2OTphVnxaMsNkMu1VDG1wPKuq6iQvCYFz8STdy3.CniBQXd7wvLa4LHEETnaiqYfssYIyNaVcm.OjifOKgusRF9_M2URPHM_qTCbrfK8QzKKfkjfHasnZmwBcfvMNoc_I9t0gXwMuKQG27KHLYzYRWpBbIKvRq35LFSKUUtFlCfztH18uyQHiDZz_hbjCTnIwEGx4uF0Pe0phq2sUXm8bHndjuoBpCg.9347CmPjWxTi1.PdZv_j58JoH4AsxfNlC5qgVPoNxHOw5Ee9NZA42CPzhCtQPArFuY_ucaK4ErBIkE2gS8ZIYLuen3zCk6DotowhtB.BPrNbIHvJIY_Q8HbRc1yCTow6H2.HuUazNchDo_0Cu2PjU4mHg2ISfeV3ceGgGF6YLgONbimMPWP_OBCWhdTQ928O.09QjbQUxIQbtguu4IjSX4QX8OfUIBwVcmaJHuiuNZ3D8tJyLSqjRsx5COQauRGUu0xOWZ1xXj2gpD4nZBPJNunZ45u2GO3dBIktb69WLVwD44rTaBB1jKi.eEuD6N3eC_Hsgeel65O72p71eM1ziFBeiP8w.B1q9QddINCLWE.kRln3JuVJsD7MjEASw.CO.jtCoE2eRFQlgg2q_S8aWcx4VeF5CJ1_jtWQGgMJtV1GTV6mGL6k1.21G1AjK7NdFghoIMp4gxORuVaHvt1oIdm4uCgaKlQvC_oTfCCQLIrFkvHcxPeJdoCNygljkDSTYElKcdn4eMPzpe8eB3eEjVhzlR4l9KhZg49k8VNZ58fiSuGpxCwua8VmS35RhULcBY8WvZu_S1N2LpDi3u4NrTHNLFEJG4AIPxSVzpijQa_YHtL1AZzBrZIxzu.SDNbYp_RES_lh1sXZgzhwcUe2ti8Lb2gLV08_kpM1D7GWZFbyrO7fpZ0mEuk9DL02hwEjwvlBaVr4JDkeM_U7dopq2NC82FPZEk11q23NbPNIlhjAo_IL6Iy.G2fRJDtd02kAVQT6Z491ioXqD26s3kutLq5IhEbJNUQz_yfIhDT0e.sVplyWG6B7JKqiFlm9Ar1ZlA7e.qnF4NUEl7F.ZeAI4doYAjxI7gb3YQsof9iaiTLDotlk4WlZehWvplOXLadfFNgp8X4plO2v.0EOigEpCEjOwxc3nGz5eU.5n059ZZd8QYJ.EbwQVNhZuvevZuBR2XbkKxcSUT__3VzaR1gG.YWm9DuuIsbHRllMQF5cSUjZLzEQykX9TP74Swpt0NVCu2CMvf4bO8OVbNhbnrfu9cmdeJyEoFN6rPYDheIKHntZXUWd3UrKk.X7KkUCsajU2ihlfo3HfKs0Nkmy9kKqYX7rFk.l3ebQV45TvrVpOmGJxT82zDxUYD7DXrhuNXyW1bRvk3CJWTGkXM0g3J7T.lkDjh6PcFyeb3qtroqXbAOqfCxWdg231QI3neePJR.s441eqaF8iqGTgLyJCwdVeNYmOC1Ej2thTyaWyWa2umgqvnRw.2oyfTDi66iemllLSFjynPuTbFCQi1Mn6RoOg3hK20cOhpB.RubBjxbAUuM_L_cTzRmdEFqe_KIfH2Wu7YmWb3kJmsNqv.U"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fb30581c2fc94a';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\/4590167328?__cf_chl_rt_tk=negJnq2272ITCxHxoO9C3nBGL.ACh7XCcwQO3HeseMs-1739180962-1.0.1.1-z86U8dCZrmTT7Ir.Byr5bhq7Lb.UTO0zitgKJ08L7tA" + 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