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://mit-edu-7346852019-gov.caltech-edu.pp.ua/post/7346852019

  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: "mit-edu-7346852019-gov.caltech-edu.pp.ua",cType: 'managed',cRay: '90fdc79aafc605fb',cH: '_ntogmFxQ9fYbuQ5JqlKHFuO_1W6mDuAVlI4YtCAWs4-1739208129-1.2.1.1-yE0of4uAu2fe8bFv4mdVRsN6ReQCmNFqaAON58Q3PGto9hnaLwsz19tlRuxuUgmI',cUPMDTk: "\/post\/7346852019?__cf_chl_tk=00gU0SfAXDE29HiMZzJwUrcdz95s9ARcCEIrJuO2Pmw-1739208129-1.0.1.1-pXYGs_RVyzxKNAWaVNtgdCPELFlWWxdyoRUCtavSuvw",cFPWv: 'g',cITimeS: '1739208129',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/7346852019?__cf_chl_f_tk=00gU0SfAXDE29HiMZzJwUrcdz95s9ARcCEIrJuO2Pmw-1739208129-1.0.1.1-pXYGs_RVyzxKNAWaVNtgdCPELFlWWxdyoRUCtavSuvw",md: "9kw3nlKocjaATZ3wu8l3h3n_mRuwmJ3uj1yvNNkXgM8-1739208129-1.2.1.1-b62_jhcpW7hvd6MbyY6prdJuOs0Kl6sbNa4Mbl4Ro8ctVaVvhpZOyHPmMz0edENuAqz90qIqD7xw5p3BBnBvX3bxfHJA3hO3Iz15vxUE3RMgB3IcoHEI_XblwE92NFdgtqmGcn7fqnEXAELcgLUv5hQSc5ByLU7729hyYUVsb_Q7J1UWYe2z_8lnb9ur7nDWmEedunvayjBDNySpVAaiyEQsOnNkPyuByOdhXhd03FZzodZlK33eewH8u.vmLgPP6eZ.7h9T4ZE7xDNakscXGuMr6E2iPcVsU0mMKR7t9AV7t3jay0mD3rVl5Szfe49E5m_sLf3bE2P1wkKDTbWPLKh3_DJE6LfJOXv.mx5e1NZutLxQZIUw6PsmSZuLJvBYTDAAe0YNUS.hXf_OjIi9TMtq_KDX9MoNYVY8pkrNulTqvtg_fxy5hE4MFDEGvqE0HwDQ1fmTEy4BN_1nOdW10avOZBXF.2s6znUdsGS1Riyc6AwWVXjDZbVv3_Mu3NBI.tYGVngs0WkJharWrwG.pLmGeEb0gw2zL24_UNh.Lqt5Zcv.cbBXXJJQg1OeJwMfoAxq8drQbNyf57Os0WiofsGL79VDvPZeGYCQ3srrfLuEFDjw2nYmWVpOo7.bM4pEQbZo1xIOuzntawXig54xVNKuT045zy6TfaTzROUDoph6EdUQMXEOuamH2lgMJlQ1EjT.095TWEuBGDiBdkSk8QqLHtmU.01wN8locKatXcEzxZVk3GrNJjg94zfoEi19U6VfFkLyx_d4LCBF6qEI5e.6CITZocunRINRfNDxGfUnWwlzvzp23N.tUN6cRrQluSgELEe8ZxG6KdowMcwvUBQvV5XAJsBP1KvLEwEttlw6ODyvrz_JBIih_YFQLQQYE.jZdep6aCKPd7FURAKiVXghsl.Fzq1_GI_hNUhIEI2CVjP2HC2AyBfIYnpULgLCN3RlVUUomABxONiW3pOmSEKglidkbAIFrSSSIsGjXj6ao5qlxMH40KJvRXwinWbhRQ5_6Tb0vbanSBGUyXZZzZ_kDqQRVTVBhDvuk9NJIxOQBIhncJRJWcC.Khh2e8WIYaGxPttXMd3k9eTCd8je4Mv9U.a_HZGeYZFuKyN1roNcQpSqvehgEXzVHNzrQ8yIQXs9AZTNUGwnBM7Tmf6BXvUD_6rXuT2ZGmfJh1DQbxv6Bp_Gf870yJ7AIweDOR7ZKrOQhmrE0JxpkyCy_Yqui_oc1Z7CzOd1nH.khnDGptxY48GYse1IU.XF2MfjVqUfwF9iWf2aF2ORTJvYP0Gp34DaF1_t2CCOGSkBNuCRluTq5YlgWkBSzDUeJo.GM_sktP01l7PudUO6FZxAFE3laV3Zs0cbSxDC22bqTmroLGjPCodZV8qnh9V9xSmPlNL3UmQpgDAmhL9BxxUs.ub7iJV0EKH2Q31VCMDoPU_Len5z8gcKU3HlN0AkgWiDJmE.G4rmqVMCZJb7Yh3GfsW2xUbRyFhaCmF7a1B8ppc_5Jo_2Q_rOffwLeIci6vCxDvt_pdMIFKV5T_ZkcfaO8.N4xSKcXLHLTfn9kMHa5317NgNxdhJMHyMWLaTOgRLrL0SM7u6bb29VwEaS5z7DoP4tcF0x7E1cUaqDeitgdXqkgM1g.l83J_MF9SnT3NaRIEZ2F6LHvUHHZket0jlo.bxZCossmgY_kyTbS_mfSWihugqMRhyLjd5llFott0r.KEQeNqCEYrXqpW0cKekJGQMVZqMc4XX1Pcx3DM5gc00CRVzeGNBUrKKU1gWdeIu5AW1uro8ch_KaGwHwsU0t0zulkEM1HoyprnmV8P4YBbjK152sKcJahP_YZNZypPbWSZvG3dj8SjjNdjW.ueINve1zkqGhvOwjpuXXccRYEyQVNXfEhXybxobDieeLvFPIvuh293w3gKynXQ6SIjajr3CdLJ5APw5Nl3vsjBwGVYespILVWOcHGc9OS_x9ldSN4fejoRaUmxqPxuVT5xzpGdJGUs6VBFUm8VNIGutt8u3ZrXp0eOXhuG29mkZrqA.203S2OQhEGKTxjSTiX0i3RaxGu57E6pdfI52SlGK512_nLf7yb.eAHzAuGXPPxjmcsEAXTAks9nfglkh6mZEUmNyCuiVADW1IIDSxVckviNpdmyCCgs1EDogD5R1UjeSuEOiAnhWZJDXZOZVX.P3MrCycmSzZRcpZXQ04610q4bvJT3LLb99l7CbEd5J9hKO_QvzanhJUYDDJReQonOzFlSNQQ",mdrd: "7rq2FwHe7Tnf.ZV0RbieatJR_AZD2BhUSCrGFp8P.m8-1739208129-1.2.1.1-L9EVOVqCeXj_lPtMG7tiVCZjwg1UKeVdNyGqZsrQE71rcLK9NdGttdbAhM9.QRpq4Xha8P0cL0FHpBCkZ9zybgFZfkpA.jh7xqn8pUaglHZ3XEn_zn8_iiV0IVNIQsH9TxisnbF9IPuBbLilE_GajF6dRaWJvqVgOU9TZmLHEpBr1hvuwjKuK0rFKpc_cqWjNXltTvCeVq67l0dZkvRAHDOO5YUCLLeH1CmMkZmbFb1GGpiBO1643DA8kKj7EChEetTUTzEdasGnmJGbQh0PLNL9hOomNm7a3BbHqTvhkcBECVQw_4o1uQdbRJFCfBAHiWnlwNbZbi.khVKrI7k4ltfg1Er3KtjlnSRa2u6KROAVOIqDDvT8t9TqdmuamwuV.bmnaISx.Tz_J3M7FpPA0WHShTwEZ5gOLDlT.udW7IOw8DaEoORav2MsnGt0sseamVmumSTnRxe9VNEFb6p4sp5VTDDVW86RnP4Quw0Uu_2iX3OEiR50u19Af1K0YHIRYYO91YGTdUUrLXdoUCSYYRXEiNK9cD9EM3qAf_7DVAu6kxm3bfd5nKNT5pqxT0.gdUNcwosHBNHWvwgK98wTGPaeGib5by3PFfEmft8JXgwBldFHQHLUfTkCLx6JMqd.amq61rTCNNHYo0oOfTzNZQmI5KFcgJX8WYt6RIpg4lDc.H8vkYx6Z1ycb_L4UTYtZNLH.kjBuxVk5hcydOXcpx4XatyxNwjcuewmQ9n7ZYTrFEP3xVMVrS_bKrvkuIh_8hZjwTqrzYGJEBaSFZOWGufLXAKtBdd4cDqKi5sZbxNrDXO7af9wq0y2TDzAgG9iEHmzM9wPaoORRsAY8LWsMwLStbKs3L4Qc.3D.PUkbdxF8KzPsPc5660_JC6r6VZGtOtsxBwQQEouzIlVtviCz.rwSvIAX602yto7mydOY7GZc0QvDmcl2_8URdNgL9dxyImC6C0gg4PLetSC5x_ZDvnj5dShSt5Xcj4dugTCEHPZgIHhtwMtfTk9XffVlNgCmBnP3mZq84NSKXonUhUzC4Wpm92E2AVGmf9w1B1ZAnD20UlE8mvSMPQ1v3cW1rYB_F1CX_5YtoXgzCeZB6AwS.1zNfdiXELjlTMqIbGwFoQFXxokMnbFHTioV0sqWR1badgdjAZKUZoJ0BP.66s2r27YvMUEMl1Obm5Ho9Y7UiFvCpQyxlLmU3AH23Pr8OM.Zys5.46iAT1yFekWPiApD7wGwsNJQYEOdzcrsZOjHI9cgocL9bczFSZIN7Dj3iR07Vql_4wyM2oEFSZTCmnVnqMNtMGPFdH7ZZ2p6xQDXIpamyqVPL4LDQ3ducTSo_mcAGLm.zqPE.4ALRCNdxaCIPC0_97vdkWGmZsTAgMbyzP22EcMlCH5Q25hOtjbCMRZdeUiStdEHe5iZY2CueckXD2Av5N7lTEDoQfA_XhoXbNG1BDgY6u6.aZJS8q0sxjjNBEZGAOH.vZXEyeU.gRMN464_w9Jm5TLqSt1T4Ix4xncYjAMzqllzw25dhdyfLCWyEogP2Wg.J21RvNgpxeTH_MMBLD66Fci5mjSPxHxDjpSHUFt0fIPj_wzwpolv7YSlFQSowNUGg08iqWuq3lqK0PZqfWEOfIUKMfnLtkULxJGh4G.4A.3td9fPjXfYlTK3uWGEXLR_C2nE31cPPOgtVg8kf7b.5TM2pdW_1FkMrGoqF5cq0butG6RroQWXv8RPKrX_F2bmtOMeDBxndjG2j5BtMpTNwnOAqSnGo7v.SsIuv8jQFg952.2VqqmoxX0yfWlJxfY6PlNQfhu63MRAFWp6djxLwq3uDvztBm_6v8bfIZFFsG4XGR7uwi_nasx"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fdc79aafc605fb';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\/7346852019?__cf_chl_rt_tk=00gU0SfAXDE29HiMZzJwUrcdz95s9ARcCEIrJuO2Pmw-1739208129-1.0.1.1-pXYGs_RVyzxKNAWaVNtgdCPELFlWWxdyoRUCtavSuvw" + 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