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-aff5rr731.mit-edu.top/post/1835602794

  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,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMiIgaGVpZ2h0PSIzMiIgZmlsbD0ibm9uZSI+PHBhdGggZmlsbD0iI0IyMEYwMyIgZD0iTTE2IDNhMTMgMTMgMCAxIDAgMTMgMTNBMTMuMDE1IDEzLjAxNSAwIDAgMCAxNiAzbTAgMjRhMTEgMTEgMCAxIDEgMTEtMTEgMTEuMDEgMTEuMDEgMCAwIDEtMTEgMTEiLz48cGF0aCBmaWxsPSIjQjIwRjAzIiBkPSJNMTcuMDM4IDE4LjYxNUgxNC44N0wxNC41NjMgOS41aDIuNzgzem0tMS4wODQgMS40MjdxLjY2IDAgMS4wNTcuMzg4LjQwNy4zODkuNDA3Ljk5NCAwIC41OTYtLjQwNy45ODQtLjM5Ny4zOS0xLjA1Ny4zODktLjY1IDAtMS4wNTYtLjM4OS0uMzk4LS4zODktLjM5OC0uOTg0IDAtLjU5Ny4zOTgtLjk4NS40MDYtLjM5NyAxLjA1Ni0uMzk3Ii8+PC9zdmc+);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-aff5rr731.mit-edu.top",cType: 'managed',cRay: '91103f13ae4d2d22',cH: '4qt7Nc2lVCrrPjuudC2GfaISRnhByygCrKXg508pkVs-1739401767-1.2.1.1-NbIh6Ixiw11xsR_ayMWE_r.JTbMUdC3nf7iL3wPnPj6ykuLma0cLHyjgLg7bkd2b',cUPMDTk: "\/post\/1835602794?__cf_chl_tk=Hp3rtxpLutg9vw4PiKmB.jXpP0GK74Rpl0yXrEeZY4k-1739401767-1.0.1.1-JxrBX4sXp320GcQWJH3Gejcx7QsYiG3wXi6GiQGnidE",cFPWv: 'b',cITimeS: '1739401767',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/1835602794?__cf_chl_f_tk=Hp3rtxpLutg9vw4PiKmB.jXpP0GK74Rpl0yXrEeZY4k-1739401767-1.0.1.1-JxrBX4sXp320GcQWJH3Gejcx7QsYiG3wXi6GiQGnidE",md: "PD8PLownzvmKQwYWq2ZJIUNHlN7FwsfVWOjnPmNA78A-1739401767-1.2.1.1-HVOiKZ3jYkBp60ZtdVMzq0OzuCIvW6HvkDGVWtrwiQRwAX_ynRkIHU8zZkPk8hhYp7OfD.SObNGfwUZo9AB_LYdInIdoJuSytTs15V82zJ8d9wPgGecE7lhuA.jlSwO_l2Vud9MLPXSDdpNlfqCxIyCK_XDfjW3CsUbmJWv8lvHl9SPU7aFkUA_gMERrQ4NW2Hf_ya.mpFU5xinMzNvXop_ne0f9qhX_7BeG_B10iRUf5gzoCIoQaU1llEksweG52pzXMEPLyVt5OKMyV8e.RV0t8e9FyNngXYAhJjG5w_BNvAwjmmDS22CnEs.n6oFDcnVJw3cVxGfpSxsGlQBtxd7FAb6XUeuAmbQBGLRNIFFn_UjFU3FVowsh1PzbftTst.RVtUtrQ5GI.WIbX7uJvEVE05u2FunGUBGvz7DkftD5XJ6eO1mdcZa9DHRkrqRblnIcoKVPFekriafXtVpatQEZjkh7Q.DgtAgqrMDGjKpJWAupoht99OPQvTzbCpLfqXx0X8_ea3ukCV.5hlsz193rTlJiEi2zHHP.M4GMv4HE59MIUDJIMxsvgNHgBLY5B.RpudrZLxxkjwmaJroYdMnsHVAMRjtRu.XqpntoToiRIN70UXfT02kP6ucInDTFeZ0RiWqWTdh_q41lNG7ryzKMew0nHrNgg_U4nW6tEND7nhEMhId1fU8ECpLdJulAkm0sJqGg_6oe8RMieZEfhMJrWF5rIjEzLMM7ag3VS0E7Patzl3fGcz8MjlKcpu1prhzirS.Rdqlm0ivKaKpNXhxlacVzZTl3dYmoPKlvkccWSRWzrEO8n78Eh5DoDYh9oblrs1eQRbQ6jK5SemnMvEZNA83HHGxpEOtTA8IQOFd0WNbGQPItH5PhqDzL1v1EMXKV6CJGKCO1NjW4f6rN6W0_iDr6PnZl.X3QggBRbS.iQ1Wb6ITBr5TzMC2pquIJKNCzTVpYw_8xHMFvXyZfuGbKiFo09uxMutqjHOSDSVOpASTPrBZoTwZ6OzG..8mG4xkG9uV5d7zkWBX5EWEgeYl3mxgORj.ZQC0qRpMrtDX9s8J4AZ5t7UakHVLlp1FyxU5jsoln3393czMbydbr48LfPdIQY2O7Ls9m8It5YZiCXDeyklBxabsyA6zJvwZEp0bUbSzdLwHVt9hNNqd28cjCy58nEeBYOVImhkWc.w8quZGjwovk7wTC0po_9VvXv36qfSJqGyO8XtHIuNA0hH8gLL_5qMjHF_KP0_FR.pyNgZ9BUUhb9mvUtqc7OlhDIA0HCIx8qpfyqp48c1y03YyTXQXMyyN9oLFZs09vgBaEmqpiQUYf6KPCUirDRTLkYmGx3RAwZe0lBWiYGYhh6La6ntovFC6Y4UmchaPHeX1w85tlm9Mc.kJ73E8z2iKrOFXMHx6wDF6gFlVsrAV7FsWGcgzipir5qW44C8vdG1bXUR6R8dJEvanmjPh_UP_Fb5NA8CG1Ma_3JsIGbgqvXcRnUEqLbMtvzY_65ZpYjAHoyu3hjPRztyT71J8JT8J9zOIhhemj0ZzIj0sDFrGS9pO8gYTVePCOWl4aDiKpfqi0qX187fN3MGm5_1Hx4YJff__xguGDzOvUylhC8ghLYhoWL8_fhQWpJVjWdqd5J6hISYKRFVwUrvwfZ.PaL3rag8F4qVxAoGOM2eTPa3OcsVpvKGPUGHjhf36Xd1Hi0hhbR_tBtme.ombusAE_rNl6N1ow6SL.WCUxo.HicF8DJ.WVl1wQfWdL5b5SyNQa7qAA4dj.8bGbQhmcfHDTKluEY3Kzo0sC0kBwHEyM.dVbyLFuvZSnDobrrCyu0E4pwSqPBCL58iVuWR.9rfUR7F5X_VExjf9LctR2MaHTTEARR9iLvm0OFXBo4pqefeRwTeHDum3.b7zOuk4gC9Cu38UhCUOTQN2IpWq_o7JZdQHm2.pj0LgiA1EjdnuW.37I0U6gloH3.D8ykaiOBPo5X_YlL9iFutpsPXSML09AMsZ3e_OLF5_Ip3aMswG2LItPCfAn1kuQjLHPTiE2V4WW345auUj3rh.itiKganY_ZQ6Y.4HPvc3ZLsjAd6ht2HwDCmYogLXl3UqxP_I1Xe0t9TeDgY_NDhIXb2NsfOLrf0i0KUTwvOQEXS5FqOdOY9YgLD2xz4IL_XW7bor9HPgNiSO6aqdtBogjcBQFViflfyTqRSCm66DKW8hDZTc8yXJFXe59tVf3QSYJZc6dHDFbp4pH",mdrd: "3uca53UFyX3fSC_qXjfvEUGpRSpHtcYRQbHLQ1bmN4c-1739401767-1.2.1.1-NfxTjYffcChdLnqtgshFDkGsU5MUJOAD4n9i6T4vjLGNLUVA.6gj3i364BB6UupJKuxRO9GVO_4_.5NsOLw9OAtR3tNQffjw87Djs0Wz8ioviqlS_t3I3LWMMThUZeATJ0pyTTp6lC6Emj8Jbnqr2h2U._u6XMs4WN7PROuROuryBzwQbIkSJal43jAnCDwlu_T0KMIhH0w9GLRfnzJ_qbYI_EfNvTVdrLxO826GxlBq_qGb7RjOuGn22LUHacEDW3wPkigK54dCQLOI_RvHp439kngBoSXdtwFPoLkrlliw51aamzTq94TQ7C_r.ZG_R86K7WJOI2LGkXCeB3PWQ6zKzyDGmT9pON1rD2m8JqinbQzSdM4JsxElnbMfpAlpdAMXpk7Hdrh1w6KlX_56e1YaznhbnNB2c0CbcP7E2v6Pb78LSfxkGIcIkVyDmoEOPu7.wf3o7MjHWpTjV_bF7mfXjNLUVW5v7gt5YrbFyPHWIzNNwAATOFmVJemzLOpbmvBpxnC29oCWeqreBF7dctJVuqTqHr8JyYNprXVPvxCw18dfrXM6UBthVrTaUf2Wvs3K9.d3pPSLj4MJdbweSNN1Qa_SSCnacK5b2hoTKs_399GjfifXlNimnOg2tV_PQsl9wY325hA3EhTzCgNqTSS_3skp_rJFi48LcGM.u48oG.1W6BZ_FcKA.4nZYJ.J.Gd1rzuoKK9mgorLaGHnUcP7PfmjXRc0n9yCWyjsw4d7.aqaeKsjPHpV3GbLgv_zkRG1fIulyhce8hJR810JzCiejNtYcziDk00y3hlusn_ibgsVYJXIC_pZwDV6dYjNvdCn8dKmEr5ICc.qSSSA.Ulfmsj_z2wafxOzJvo7J_lIJ4PNESBYavKuKxS8ga9p5h8C9n3NtfmGKzn2XbbgtPgdG0g7Wv8a7U.5o.w2gdW6gWXOQ0pW4ZINI_GKNwAMclHtghZcN7EoQ7SXLyXUOj8eZvt4CNvkl.Pd938AWHpep97MaTy8Hr07q__ElSKv_qJKBm2QJof_8o2QTczD7uX4owoJTPsdJSOiJktkQD4IXZYQPEiS8UFlLmllItzMlWuBDr2Gk0JpE2iAoCcCUgjG0hVwIpnKnKcKbu5ZO3iRCy62l.I4aqRKfWvVJQWJcdlI901fDQG9RNemxSC3xYHAW_y8yghMepnhYO2gkkyUgOY6nyr4QUfRKGNPB3ySLo4xaavFvAHltEiJ4fa0ijowJas0LNIb2gHLqgaOjaBzFjE2z9dVizWYaW7LDEjaa7qHPLWUzmsczc9uTcAIaE9gIzGtFV5O3hSvMgbYT_NLZw.MGA5X13XxnrVGHwesTAJjUfNx4ukLm322DgdyqPJP5rRkyfljo89lZAOZThTHjWIgXrniSbm0kmcu3CTfUTg49k1YiZSVEhEmZV._JYBX1zYR12ycyYzjVBA6r6aYFazLrJbFA91kePMJFz1V2VbWlQCKYOINiyuhz2sY8gCeTygjnJg71JefBHAaYLD8hc0hucQzFWwXpHMeCkxP11mws6si0rD53x1ZHhYGuutZnuBKzKGeWC69IKMINVO9tnpnMLMCToTL1SWR56MRy5shKMv..f2RAgojkqOM4D5ojcJ3dnR8yD3PSE_VtTQkowGft_7CRx1v56OyDbp71SP4OTPGoUQkXMEqfKUlo37Ofpgx_F5AoEZSlk9Htdz4KY33f3Z3HMQgUMJze5V5WGEm4ZiIrrZisW87tjvzBzPxl9SMOQ3nepyqYBEDvVcPe7nRjX4ZmkFY0SZV1MIaKoaVjfxMh2XgumLW_P5UgA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91103f13ae4d2d22';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\/1835602794?__cf_chl_rt_tk=Hp3rtxpLutg9vw4PiKmB.jXpP0GK74Rpl0yXrEeZY4k-1739401767-1.0.1.1-JxrBX4sXp320GcQWJH3Gejcx7QsYiG3wXi6GiQGnidE" + 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