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://errspv.mit-edu.top/post/2140386579

  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: "errspv.mit-edu.top",cType: 'managed',cRay: '91103ddd8b090623',cH: '8bEJA.qQSTsktqNNXCDuVKeB4vbMUnyFAHPhNt.14CA-1739401717-1.2.1.1-pqJ8q.uvJUG_xxnd3sXoNRy4M1JMAgNN3FpHSwdjc_0qcPMWi5gAO8P5m49kX6DO',cUPMDTk: "\/post\/2140386579?__cf_chl_tk=9vcWgDPAUXiGGxexd4yIo5i7b7.FbLSq8IGB9AF1YK8-1739401717-1.0.1.1-6Ps.joyVHYeXrI56jCtMGG8pZQym_tOuEiwRJRXJeTk",cFPWv: 'b',cITimeS: '1739401717',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/2140386579?__cf_chl_f_tk=9vcWgDPAUXiGGxexd4yIo5i7b7.FbLSq8IGB9AF1YK8-1739401717-1.0.1.1-6Ps.joyVHYeXrI56jCtMGG8pZQym_tOuEiwRJRXJeTk",md: "4gGXakVZ5EnZ06hzYvISu5Nvj7xkEyXJItcX.upI8oI-1739401717-1.2.1.1-gy7ClclTsvXgX61CHWTeK6VwaMaWiReJOcTFWsYTOUoaDBmtIZrxM5XOgEtqYpb62nqjhU4dUUXiDZ2QnMPd8BfCqNpb0.3Qe5.m4QOaXa1eQjU4wI5ioEEvwQpmk4b7HrZK2SNR_EZ5cQmCPa.wcUsDKTvaocSddBH8AwJnMJcB2t7NGcIUziylyiHvCMqhP5Ii.Bg8e8Dj8BrzOZUNPaPRxnr4YU7XrwGjillcT0N2LWka5xuDnybmE7Cjw6ltrtTT.G0_dDd00VTjwvg31NBZb7xEZCxV5PeJEzNZtsdwsIpVqkD_Q6ORjsvlMl7dhUrukxrdKAUoHTetqJL1i3vTfhVFk7AtXvnF_9D4p6lY9VOC2msqiHC5Oezm.lhabSNQqu0kCIGpnbLfXhcN2Hpopry62ES6ZDRigYyN03rbappFYgLI3sMlhqmwmDa6X.n26D8TRyqcZ2CeVwUq6.X8xoi8L3djcJw5D7zLNhWtHaUL568_hXp4_SL4.xufX8_ZRAej_qCbr17m.sXQYxKp37393X5aS3tIWqHQFIutD260E4xGWkyCYS28mJb5hd706xXYOEehCYvdQUhI6MJCBNJF9DKTMGyLaGiFxNFizVMfNHhjFaRX4QgkM.BDW4QqE6ckmcp.rKoDe.kPG9wG2EHqU5k4G0rYiS0ZfnI7VgkJjoBKnTMsrSKWMMkW.cOLMKPvXUFQ1F3eDDSMTXX3rlZDIsza_4O3NgPk9.JpfbvaqLMomj_AI8s57RORrQ6aeEz3vmlWFRLo.2xO0c1n0jE8jMC8gCUQQdTZE29RkJGDfKYmL7FN5RWyR2slHrOYnMw0biCyF50DVZofsLb5jt1wIPWr0wB2A74BL.uj0yewnx8Kqzgh_RpM7RDVZHJwcgT_b0Bcs9QHcAJzLviULhzAqyzDb2ez5BnmMBNA2_oLCR.qfj66y3OOscPSta.nI9THiB1WIpGDJLk7SdH4UlLY.R2X1QYLtWPvVcNIlguHk1ZcYPPlcaiCrXZN9x8T_hd7ZdYIN2ewyVhi5V5Pn4m2vWK936YINzDH68rBO3LpXc0.l5OsedfVoEdAUKu8YgwLvFVSvTqs3g0ovA_alrZAsgGGnQxNU1NMqFbKVUSb2EY7EVv7kBbFZIroGlbp4gMtEtY8GkMtxgqsr8a4TbttIrjFg0ynjoUlEmUoauwfbifGlUmflgEhuXrJm8vyllePUX1M._w55m9aCBBZUnSR87ehjjImN8bsP9YPRozErUrQmeZBAGy2iNv48YRGA43761ePTMilD5Sf6g4bwactE4tR6MBBnrMzTR3GaLAI34oUNHajoEfUvi1MYF.tQnBtD0TUKQFk05tOQiJxcvJMc9NDM8pPZJYGgl4IuyrlrdhJbk._zgUYl8Tzs6G6i2epE48wOCmSAW_c0DCQ1OY_0AOF0V3p00zeKKrXlrqaTi8ltS499gr5ikak4tjdESic937NdWf8dsCyiKuhZWf07FICvgRwbnAxp9Z5F3h45.SzGX46.Y352MEodStV84d_HH7hzF_CY_0J9hXm9muUDIVZuMj16uTngIfAZt6hNCvDYa4j4YSLWzRZ7y1ugBsvk7DWfP45JVGxom7rbaGA_pjSPPot9W0c2Y27NMxww61sLJMA7pMkvXF8GoUNSJ9QIkasRGHHV9mrsX7EHayGCNTUD.8wvMomaANKkSc8LHHFufnjrSBM9zc.1_OHpSv1pUL_plcMp_DpkyNo8JhEz9STumWWu5qEGAk9sjR3oGygfrM1uFvxe.AJWfRWpwnkVifC6qZBjaS4ax0PSmtOBT.WRHO419Q.rIbIf.TxGnjhwl2MPZOGj2GWGqf.tqF4GV_ji7qb7w5QYci5WlzhnqyLVKkyvv4FhxNXMiRgiWws7fimM1ZLWTbp7g3WBRiDTW9uWM5jX0BNeWa2Bq4wxTW7dLuaxVT8KWAUmsRpx.AKduW9HC8IrS0OjdWsXl8p0kleAlI6J3zA9a_h6NI2YciSWiyOQ3S5icHq.mJwotuKdRCo40kEF9kMtvPnIKk.HMBvIkx.ksTeGOEIk7DYhchH9MCcSxgXGhmd.yParp06bmbrcYvQS1EDFbtjbufd8XvV2YBt97jk_vpNqKhNBqR1VdSnpXD9c74r94VPz1XF7fXckxlD9NC5Vab_tkwWTdgtuWc_gt81gtzsOpquhIF10.mhBfuEunE",mdrd: "EvYdeiGZqiDv_3X.wTUVwZkC4zo8hA5ojsIdHmjTeZw-1739401717-1.2.1.1-2Kp_sgiABFL30VKIWIaQdAZcn6q_LkX4TyA8igJfdmOTVbRgkYacQzRelvVzdIJfm4GPbBPFr52CxI2hhNp0qMQJuto1LPW44oCn1nTCA7y6GGKcQ4z5GPgjvQme6yIYzuLkZcMxPRtW1W9SBtFIMPbe_QlMHRe9AHC.dH2tapm0ohuUljiwWlZBucV5NfQVbSarmcsorErNrgaYRrSIRhI0cIFs5fuyXYSdNkCAUSRSWEgfZYKq16o9g5qK27yzs6NaosllZB0M9hyOinBxXMkCXAuXdWXi_JDRXMQFN_bGKnjiLWwYHBKs729FnIPkPxj3Z4I3PKtadkv5UlE9bvbtyCPDIWydl.mUZWLYijxEb7ThCeu.kVH2uNOT0eKuaMIU9WSzgL1ITOZ.HdQfegPTH_TTIVMwlMVgg1YbZ.d8ddy4HWb80dIo4PXrbh4Wd2fPZbqxm2ZuMygVbMWQruWEfP2pUsucE0SMo47N5u6.VZhhNfJ7cNwD.EBNjklPsUL9uPgyOcaSM7E_jvc9kV6mG15Y0cvijNetnkNVawZ12HJu6zsBM3juWAwBhFHIySzjCSuzUmuiLBKvgwSfZ.ocEoBzk4_h4jfoXgTEvCtO_bfOx31zMUV0xhl18BJ6Knz61mUIHdeyOkkvpu.eZP2hqlJgQyGZ9ItobgMrHGpfaPLcBdsSX.A_MB6M2XO1OqpikEIxe_Vvrcu9kwMO0Uy6_p7jVi49UC3UBM7dim6OXVoOb3q0JAOlcTKXLUWjmurSKJRyBxL3eFPkCxO0jjGfkWq8oNeCAT3aXqP8iKjlUs6bN1dawnO2HvXQrpIs83IxNwaqEemwvPP1H5vilZWaOYNa.uTx3UwFC9eTK7hqkZ2vMiO4f_pK4fj2gSM7VrRtGar7kQQmIJ5I5_J5NGKY6mCDmQXeCJfMqrL2l792_5scEe5SXKTFo.Iauu4Nxg6flCDW0VMYuaEdupzBxob6U5.lZIvKi02EruJNvf4RBqm_rPWWnUaBuBUTkKYA.OpbvM8mUFf9nis6c.TOvnfNbpX_UvUXc0loPnfNJEXYpRwYn8iC3G.AzMmauCD5SCdi3bCDAh3XTq7RfuxLWu_kvU7ISBSj6uihEKH4MmpvDUSFtuls3hdfGh1Gf_Irs_HqU.V0oVI49M2AhdV03n4YXGpdGr7PZ2oLuNADgaSvW65pecPvMVPKd8Vm46qjIGmIS3NK9KD8nfoJNcnRPbfXmC2tsynB0.kHNWJuHPGPUvBwigF.dlVp4pIVpBX4MuMU5l6.z4Bu55THIFPpjOXg517jk0vq_04QUA6uOZBBqKLuodEK__aYSdyGB2IRc66oNPKenuAnXKn04o.sKa6fdl4ack6rd1vmCgK34.JwW..NXrDOJkuqAxOGttrCx1y7Nb0ApO7REPATB_xbfPjDe3JlJr.JfOdZW4ZhxVNSkJBkY0ROht8COerxy8b3BwT9jwC4bAr2RzqXSNRdjhf67qh0nB5b1XXsTGGQ3FykDeCXSzskKWLt.SkqRYZ_y7_kwNmLcqHbtlH.XVMupsUoprwTJwTeZdmm6wG6Fh5Mxo21H4fMkvyWab5TexzmVaFCQkMe2f6L1coDcAj23BTd3JcX2KPAPzWWsyqjwD0H8eVHjtR34KRirmhE3ZModxZBqUCFBR2jB2by.jQB167u3C7WH09qW_cZPc1DMQ6OVZJsPFy7KFe1rzAZhlUHn4CC5zm_wnlaQxUv3xiLGJ1QYdB786iXSmSKGuntNXOBF0PQCEAu.1qZnNINYX.5"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91103ddd8b090623';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\/2140386579?__cf_chl_rt_tk=9vcWgDPAUXiGGxexd4yIo5i7b7.FbLSq8IGB9AF1YK8-1739401717-1.0.1.1-6Ps.joyVHYeXrI56jCtMGG8pZQym_tOuEiwRJRXJeTk" + 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