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-afficj6l3.mit-edu.top/post/5369041827

  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-afficj6l3.mit-edu.top",cType: 'managed',cRay: '9112aa3aece605d3',cH: 'oMLVwFQJmewBlRr25Au8dGg4d6HHdJtK7rkrvBFpZ4w-1739427127-1.2.1.1-I7N9phpAtRt0Hsuu7bCbhhIOOvNH8cY6z0Ip8QiMQ9P1D5J.8ibt946R7Aakrrws',cUPMDTk: "\/post\/5369041827?__cf_chl_tk=.nwE.yO3gEmhfaG3q7Ymhv9EayN41K7G.jn5QqX5vjo-1739427127-1.0.1.1-ypyoRy7GsZOVx_59R4Nm0Vs.fUFOrEOFs9aDyhmGgoI",cFPWv: 'b',cITimeS: '1739427127',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/5369041827?__cf_chl_f_tk=.nwE.yO3gEmhfaG3q7Ymhv9EayN41K7G.jn5QqX5vjo-1739427127-1.0.1.1-ypyoRy7GsZOVx_59R4Nm0Vs.fUFOrEOFs9aDyhmGgoI",md: "XrUew5z64Xgh8u8frui0NktfyiTBYdsTfKmKaenuIfg-1739427127-1.2.1.1-vihnDVRW9Eld5Ubc9bja5Iu0oIieqIfzZqr4wJMTdMiCG68fiaMRZdfJ4mse5ZOqbg1gXuKDNZErgz0ICab7I8dcUuNRLnlZ0w95Vxncr4Y5DyJk8p9piaWytlTYIjmqg7PtAjuk6mgdFj9qdDVTVmMyGG1NOjd9AgEDmpUqTSJzc545Eylfw.WwRT991TCozYwN2u4b6ZJV_gGF4MVIyEAAE1elUEs13BuBgtY8UFfISipgFsV2fj8JZEhJkZKSxg7SLLlQYY_4XQkJtGpgauG9bM3xO4MRF6r2k7AShuUZne_TIohDMYPtrRv60AdnVxWfcOGmf2bk1NmDPxEJkxonbZWvxK79LZY92Vz625VzVd0jcjun0qLKufbQpv1LN3trgL_47O7OjVzjZWdYjoQdPXHfG3DkoJ3u1Fko7BdHOfDXhIyqxsRXSKvTjbnypOyhHLFUCibTsfsiucg74efAd4YOuOfHpPyYcuFpNfB8CI1.ODUrNt9ZO.HbYDfJfaCjEDWaCpi0R3Rqso3USnlbG5vfB1fTx13cZgqnxaMSl.AmaUWTUdje_R3BoQxZeqmmlDRK6Pn9h8.UHXsls5Wdf7_onJ76mjnFCjVU2YyzfxO32xMOQTfAOZO6QC1H31QeEjETp8SJg11IpNG8AgbSWvl3L7KZA7xXKl4WDbmey8i45hZNdv.ZfIgJx2Uy.rDoMCS_Gqy2IJMk81Innl1kxQRCdaEbWJXVbzZCJZPPNUUC7juUUP_DcQB9Kg6UV.n3V.fAx27QTopPEGPfD5CI73MXBNqxw8m77bPN8AgUSG9GUib.qM1YPAvzxdvi9s9S_uJLFo1QO4VxS3NVlNnNlh47Ivw4ago01uPUBtIPYM9rCQJjhi9F8Yl95XgyHGFX.SdirvUeJPmbCRsOviuSkrQVvLIOubUaqNMOwP8HNY7wjaM23m_fQxiA7YLNZgh5aRWtBCUtuTAn8EM7.jYjab.ovyEPu9N0uWYD29pVXFYH1Sfqz8eWNdKTgWjP6HDbnSy.DuQxKbtWrpJHYzKPGwE49Ev0SeQR04mDQrVEjUpJfNCGLMjzaNt5GHyJHwX25tK6F7jqNa9zAX2pwiTTwJ0OUIAdTloWJeeW4MpLR36cZ0RGWRg.33IoYp8SUfZVDjWXvb6RxDFN6C11TfzCFHc947dKRU4Vahbjz9YrZ3A6W1Cxa3LpiWsLdWwSfrqxFG8GwNOlaxOvnn1kNXd9bWWFrXCA2RhG.am2a1dT8LhGydT1MIgnaHoOKl0uK5ScxsG7m242hdn58V1IIbq0mQW9cao7_BWJOa_P.fN6I5gK0RZK0I9ZuNBisWcUOZSTTh_eqZCdxw0Y9BekgXmF2IKnazO.kQWAnxI85ssbPskZ8ePc9GwaaKdEgFBf.59HwYHcvy7GA2EzkbmS3uyfrvkxpwk1XmzD7CvQjYxe.YxQfhiwmkzufr.5JrYoeP1nqbvH4qpXHGBx.jKTD5Ys2KgdipPNGGgtBe8nWtJstwywmBQCAQzTcH70USTLDa.jMCReyzVMTpRgNWoFlMh1AvxnaUFXwi22ltxoUve8f9R69aoXXqGZ9VqjEeR0t924SWaLocRkA.zuFUKA.nuvM6Sjbsyolwe_xt6tv.p.6Hw1QPubqzUXvELg6wC7ijfe8Aqu_k9zaVJW6oNTiAxDBxaiyF_fNx3LHZL6LmzjSMD5NbpyWZDpbzJ_p3e2E2jbvwJtYsXTCc7BZDhWRXSsluZkLlGmjxyK3t2bw3TNFoCkcdCTriwfcvB2jbZFXOD3104Q4vYu2PcZr9Ji9.FIXraEKQwmB0k.4U3l0Qr5C8xRGDpQJSn9Pd5bv4kCSbEVYPlbq9V0gYhNW8dZspxR766O9L2mCc5Xn7KB.sGJVtQGZ5SvfgLdBkeifpLDYsCgtQ9xgTZxqWvbZCsXAqb0_uz_V_Hvfs60Lmi47ECMdQQ.0Lb4kGO0EJ8zPHDzUo5u3H.Et4x__qOgVUq6dARk0Z65EkgwIBbPnY4rhh0f6e1yCayXIJInDmLpDsW9nrlpjySd14LuMGNhDS6ncdL6mbA4eAwBAbm6F9Q.n6xfimSTPJZxvnYmFODD1LFAfuLFF_olZL41L8KUcuvcTWkCzrHkkPQT.OPVK4MEcdM2wex11toLoty7kdX7WC_SxDS02ty3gcKTcJ92dZvR8PfvZiPqFpZPYPKwwkkqZpyHmwZaaNGgl.G.dcZDitTo",mdrd: "HU6VX3ThtqQjk0C2Vgv3HEMcALIgVy9l8JMpEo1w2bM-1739427127-1.2.1.1-SU5ZyvoxAK97Rf5Z7GmgwFxnMwxosGOKQohmesDWhyO.9mZ3WiJS5jRK8mJ6nNYNfxkgnBxF5bqxD7WzfjlC2gcX4f5xqFI8wN4alYVK.uwBkvzATkxzoWECbYZdCUHdQpB.mMTD3UdDi_73OWyWIKrziM92Y3aeXj371nue8qoOdGUgNKiPUkihmxsCp24QiWE9UmcQSiB_O8bOzpo5Y52Bkdp7fh998lIZQxvvBXcGUzSfY7KrDFHnLTbcUyDLefXNrLbhehDO9gYdpQucSx0nWRZOdRQjNDYiOXW6U5iKyHoqt35nP5Bog5pd25ycqFcs6SbzXXQafD3HE4OoLHC.l9D81r1gK5BHjpYRmUxGY2e2EEjztPvJL7y_KJbshp8cfyZKFsfDHCJBBYffACyx5WfGl7qrLq4rbwmM4JiFSDmILT56syF65WHu5EnG6jtBQxrvbXUrQ7SFpzpuxD63hci06dW_hun8BHzbozHM9Bt3UBnqS7Ey1fMnwXPzo8JdLK2peiz4S_h2RnFiQcXzIruN7IC2We9eLg35Y43BJ1jawxlb14.Di8KsYtfiCu5.N6fDWODkMxgMb.ZFkbRZRJzsvLbzPq0oxwth5HbQoTI_2GvHUXLp.un_3pS2xjtMumzeWCdbjwOehLKHVWOiQLIX4._pTSz3XoMsu4Yi9gRcdIG3pD45kWD371sOy7tPir4lFt8SmyDTkqZfXPFENFy7pch9uAoSpunvD_mJVZZpzxe8FuwM4kOzCa7TgiYh.z09KBRJS7K5g_OT1IL5hKHOvBKNkJvM_kjMFDtq.4SKVmBizJ2VLGt9hSIBUJc0ptPZ5Fmk0MlZZei1svZTg68UGNkGv3sUdOCZTuGwClnWWw2RzzogspnwsTIVCv4EzudemdDHZZLT9kocbHzoCHWmtqczpYtwB8kTOumoP1t5aMO1lyHA.OhRCw5H29cPo9wKOVQEShTQRilonZ50vYmqOL2xEeAYmAXuXc88TcvnvbMXoSSUQk4k2UGJ7eZ35sk.e2pXRjUd78JsZaswBhxMiKO73_P7j2JxB8MiGQoxny3E3d52C28QvRqg7qF_bKG3YanM0Rq7MDO7QjElKvQwDxX.KXh2CtdWcutBldLPIRrGFl3recuZixjLCsLOY.bVQ5XvCxFAX4ffJ1.fsUSOXzeJ6.RXlJJTDVnWzfLpvFwEYZEvy7tMonOgGuMnJzQYwj45ejg2Nkn3KteHeaDZP4TwX9erUHICU7l_Sacxu1n8rSSpqh6fOoInyEQW2iwZUTvIHxizDeZf4_JTMjRww8adsB.2VGKkuqxN7QJHcvdPK1zUd6Hcdwf3HNvodswaA0e7Upz8Qcd0hImk7FeFxExzlmz0M08IRJflWRV5f4prX0phcHnr2il8kNrgg52NNlmb.U.1vHssq9VtbB5CT4v2BZTpjYhFh4jQctDyGABKUQ5Uykj8mFOUKYf_P_JmfNx0RSMXMx7A3dXa4wjwtWiWRXwFRrpDrGUM8OvkiTRDvg7a08_ypEBMu0dtYmnUSE7WDixaQFHwQv57zUHGN1z6lsgXjPY8W6nttIXR7tp6szIt1bcv_CvdY0mANCqDY4Wvp9Vh09irt22AR3qu4hMn0jXXy92ujE4JQ9w7UOIQWqTC9gobPGg69VTWGnWee4GMQRPPHLAqUcjXD4D3uz1A68vrXJhvVz57in3U_4kzGyclZAZZOYkbJsrq7lTbKfrioANOtQCSZuqipHTqk36j5y0LsqC5.KbZYJxrbhlnKOku1NrdCmQaBcuIYFmSVahtBcr7Ygx47ad1YOecW2lsTqWxY6sPyjQ"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9112aa3aece605d3';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\/5369041827?__cf_chl_rt_tk=.nwE.yO3gEmhfaG3q7Ymhv9EayN41K7G.jn5QqX5vjo-1739427127-1.0.1.1-ypyoRy7GsZOVx_59R4Nm0Vs.fUFOrEOFs9aDyhmGgoI" + 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