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-aff1kf1ff.mit-edu.top/post/9603274851

  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-aff1kf1ff.mit-edu.top",cType: 'managed',cRay: '90f23bf17c345854',cH: 'oKJLIRqjCye5TfoBeTRtesjX3Q4aIzeef.Htga0zsUQ-1739087065-1.2.1.1-GWnoYpycoZwmn1P5KC_nma.6YlzefbhjQvdQkD6ozsSwWGKqH7y_spmDwCT9jkBE',cUPMDTk: "\/post\/9603274851?__cf_chl_tk=sQ3oUJEmJ_kZhQ_6LNZSGgc6PdoReOrgFzG._pbgFqI-1739087065-1.0.1.1-DOiqadJhRjmAxMMykQJgln90FXDiOzMMK0dW4UB1Vqc",cFPWv: 'g',cITimeS: '1739087065',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/9603274851?__cf_chl_f_tk=sQ3oUJEmJ_kZhQ_6LNZSGgc6PdoReOrgFzG._pbgFqI-1739087065-1.0.1.1-DOiqadJhRjmAxMMykQJgln90FXDiOzMMK0dW4UB1Vqc",md: "8LPKJbKLTzlouuCo9VAdDCWay2XaMKQX8dQ17IG7ajw-1739087065-1.2.1.1-_OEEISRZe8MhYWpJ3qdA0G0WB.XMgNbmxsa8BEomDo1hu_jpnaXK3_Xt4cZ35olfeOsOBtgLEB_.T3bWwteOWFRV3VCEQ.DqU_fT31x25P564BjLW5Cd48KkzYQkMRqwQjXgLkfKR5o4JAbIMAhyqTU1tsNy7UX9nh_Q460mXHQq0jvE4nd4lxJ.FppMl46kalrDuDCQNIv299EcZzIYzDjhyirgTRC7URikfO_eSBszI2oxz3QUi1dKgUWlc.OfyqZNTvF9sXfhhojD1FhEXdtm4hGJQI81rPLe0ief7fQM_L_ueS5NsAM7UaWo4wMAdl71LEGq1Kmn0ha0q3RydIdVpgnc1J7pzkXWEywb81XCHEO6Cl2p5kao1FdEBvIcHYUDGd1L7FnbfROPj8W66AdVK_LtL64sqojTNSuAmdyCaffSlpSzwQ14UAfa_ssYXYPrG8frDQMiBP3rUV1Q3C17CkPK3MV90qJd5wnRMf6jhV440X.1gTjtZuHLtFyJkZIqHXIrQ9yD9A77KF4KFQo4MxI3GZYGwLnmpZxddUz6bO59tl_pMHQXA2ks1_tlpREVbfBqrDz4ZfRv9qJzAn5JVfnRqxFNPf.Eu8W1FpXdPLYafpKwvLk5DMlxNQP1rktnknu0QWJiU5uh.6r3cKSbwJTJMqZQFDIcSCnvkOckS4zgcgl8K4XoCLV2L.wLOCD66_2rQSomWg0YaYLHQzM2xvZMEnCKmux.5lbiEsh1Y0Gf7CdziUSlpWaDQAPTFv1tcUs9Re7u1_06O7WTcXmIv3C0_DBX6vmzDu_0MtaCY3CfQrvttvX.XYoTwn4Wqrh3I5VpFln8CASGFK4zqU6o7dtANQrLWCgdV0PUYO4NaDhmDT2Jnb.RAnzrVY0lQSJx0lVteoQ5gjRlPF8_4Palqdk59JJekDBi.zuarS8wShLFKpjvFWVLBssTw8tOYOB2SJrRZkyhNuYymzw21H.KvP6WjEXcWh9K..eb82lvNvjJLESrrUgh.5F8qNFYoye5hG_qeC80tlwjWVV7XF._suaWHRwv0Zm1HBF4Jn.WeJLs.meRWEW_i8ZJelbxhc5.K69q.Pv_2sB8Ma8z5vcpzmeT1lTQa1T5Sto9fAeDfiuqkcj.xb3NCu4gOo9OjaeI7QUQZPjR8OWr3C1aa2PpBf8wYZIBYdCmFui9e8OI38EJquqJ8dcQWmB.8fn3SfIAzRfGB3y88bX2yaUnnh4mUnVOsr4AmdNdNMqL_ZfxgR_MesBVV_3HgLxs1HXh6lGImQlE5Y6wcoJ6wTZEXjd6E03VZ_ZKFIQ4gEzYj_Rh5Tea_YNElJ4UhC2y7PTC61eFWDHu6CVT.4O6KA1iaCSum84Q9hr.ayF5C.J1OpI.5YLzJfM0lZbGpgmbBsPXCBw4P7MjbLC.xgZ.W4O85uydVq6Qh6csQvfHwjgQVTl6yfw4AJughIVZDeW.84a_43lCppB2UaXBAj1FKbjBckLwUVmlgC1LVo32CYqXzz5qutNmS3Ua1hhygDsdYSKFYljjBlUBKJy.0ZQwYi8t0mAMDbXyjG8Av.p.Z0tRRNE46iviMdwoSj7p0gtBN1Iz3hLKtjjeDhjih353GYmTVOBC_ds9sGgILAEHUgd0DQPSzb480vfuIE60yOOhNV2lfAmsLg3USmIs9YAldIP5kpbQ2C20LD13Ut.G8a_y3C_LwjZeeQLgjqphgJC7ysNARqVaADFm4a2juhA85RP9z.eiQ8mjsrrtfI28BCqgnlP_ABJUa1YHKJ8gjZRy6gQ_0kEKjL.cFGu_CmlSATpcqQz.iWJjplct1Rq0Qm0Rp60ZCoc2PuuhjbRoL6K_ouvzmagKgQnfJBPqHVOQXwJ9BDhFasmqzaqU1JU8LwOGvl17xxkNVbomllkXKUZ3YNjsVjSwlC5T5U07U0JW3OF0BywsGIU3oNBHGFOFaLjZ.1Y5JbYOIkd9Mp9MEEXwXwNbJkDetasNzIb3IqkjiOcSluVZriVRbsyOk6gv.TVWYV7G84pYox6Dk9aux7UaqcNFfisLHHMkjUOkDgBwaKLTb.LiuWMukMaGJ2cVH3YXQYw771VCXzMtZAk6NEmmYtFDaIlf7IBhsQO_1WlSIQHswXg3IYdeVVzUjJOcWaOZ_18wKhoBcL.QrfU0DXrH_MnAbtuOjw85siJHRTNX8nCQl.NHgVNrrUu.VqkjStki_W5Gfa4cg.oree.EgDmbPpQ6",mdrd: "SZtIrTsjojKoQrj0bh5qT8cUFx6fN7gZzEW0LRPvUlA-1739087065-1.2.1.1-.azHnDsCYEi5qpoY1HmJXqGNizawUwMlOAAaIY5vO4jrC8GHB8SMQEzYQHti25giVJ0cmG7.04zER6Kti4lmpkgh8tm.NcQnQWMF9FCgP.qzmauHerOLIRUY.7kjR1sAWtk.gzLfl6TAX1.1GQkQ6zaVdkSxML0Njuqg87oAVZPhXXjDLCZcjZfJyttXgQv_1zX_mDu2fMekzx4ousXipSwkjv9VhoAYPZVHi6ShZGYu9evYgdSozqTmESBb35w55nzvYHuhskmZmZx99Oi1_EdU8roBiHBsUf.SO5SUGyVt2ghMIofsOKcPKkYusJ3VaWCgyQ1bwfTZkc_Lq.Qw4VpL0mTEmMaLqi0IaUSgmvIqBUNaWDYqTcDqQK1AKB7KmKxSibCXdeK9mgHVqBK3GzJG7svjgWQYuazQFbQ2h2NQQEX1lJGHwgNGNBL3kbVHhy8FoU3N28fTxYEeSaLnDx9V6e0pChvpN.xFfYWdP3Sm5Zw8.KemUNNi.cu15MyPyAz_3zSPMhOyixVhbi5_zBFVMcYAvX5rTtTXTJPerbyjRhP1Blhg3igmwRLSrv6LNeaonEDc8oaYwiOPiRsOYhCm4fBBJc8KWEHBsh_Jw_V2jhITx7dmHYK5UVJVUE5MmmiFvA6oWvXpol8knYaAMm_qr_uMXMkus6oVv15EzvDZyrXQTJczwIsLrCR9lWHG_LuS7JrvSa9DNfkkG_zo0QsS5sem2gS66tgfi5_EIzc1eJqjvIDPv5FPCIYfd_t9yw97W_o.eLOIdiB_syr.V9AiwQVnoqdoKHa.b7R3v1pHrNNHOel4RWPXfubbobtm.Bseml_CnFIY35haM0Bn3ub9s9cSgCjaZzUG2xhkiynQCoHz3FpZ54ahcnHIyHHiG.dligrEKWee7q3aeyz8ypjn6snxTLDfXzrbIVe9.E.GFtKXPx_NaHPWC1HL_zC1YENe.hIZCXaXu3FnX8HmZz9NqjPDpNrBytpvSk0zjMjc60Tl_27anLws95SFRjGnLWEmaFRWzVBCFjaVz4Gwesy12ngl.Fk1GtzE4zqXEf_uyLK96.B90zDUvOt8h04ByPaLS6Eu9SSNzqwhmWZ3YjkfYCmh4f7NJAi4W1bgvWSz1u35eRQqy5SvFIEbetgF05o4cnC1fr8FO0ymJmI_aYvr1xSFBFfhhATXb2axxN3CHIDtmYISD7CLnI49QYfDBtHeVH6houpex2m_dbSuLuFDiKVjVVQl2YYS6xi2G.xfmzHdG9g9zL6pGWItzlXr.DS0ZMf5hc8kZGJmJ_YpdxJFkKUrLOvDQIuiNx6aX4jC1TQKopA7u1MrbXefKfNap0kLIUVIPLjMSOxsA2VCe2jqJbQSMyvUvVkRbysG7dxbYrDY3K7C_kzyGtVtjZWRk_p39w6rv2LYE2X5bUyQX2Oq4jxgtioq1KHzdpnUDLTttX8tTNAWFCb6cQlBngFJvQVENPNhcUrwZrm2I4YWGWcPbzHCMVp60.dKaC_Scn3il1AuJsrTMsOKS47lgcQeAlAokRyVKwjX.aPPjtOkAiiLIldWLCH8SctSqhY4mcuhgzSSyGR637hU5Rju8pXEj.WC6ZQle1SchedZoG1xGls.z_AjJA_9HY0JsJNcOCQhdhksWPNZptKYyy21.GX59YLHFS4prn2sCKu8MRXvuzmVZ7kBj61WR9lIadZKaklFZCbHXnEli53yj1SGxx_yuxCHBbuOJIS3AaA6L8K89mWApcyCkeKBj6UO1Pm8_.wWRqg5BmCcLQbsYtPPZL75vSbj6M0ZoV_iUGMoxcjzMtEx0mYzaCr2s28JQcGvp1Y"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f23bf17c345854';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\/9603274851?__cf_chl_rt_tk=sQ3oUJEmJ_kZhQ_6LNZSGgc6PdoReOrgFzG._pbgFqI-1739087065-1.0.1.1-DOiqadJhRjmAxMMykQJgln90FXDiOzMMK0dW4UB1Vqc" + 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