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-9435026178-gov.washington-edu.pp.ua/post/8210653479

  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-9435026178-gov.washington-edu.pp.ua",cType: 'managed',cRay: '91ff293aa81d5962',cH: 'w6m_GpzEPTm2BCldfXNtbmC8.7UlZ4BSevgntS27Z4Q-1741906968-1.2.1.1-yDVDRLVvql8XpqdUNuoIhDCWzILwTjH8970RTj7Q8Is5OnGtMTNFXR7boP4uYEIG',cUPMDTk: "\/post\/8210653479?__cf_chl_tk=ySgX4zMDLemws88fKU4OdM7PA6qIQo7W6mzCHD7Q_Lo-1741906968-1.0.1.1-SRyRaYT0k95w3pc_xK2.a.cuAqXiLkhMLWeZH_PM3Nk",cFPWv: 'b',cITimeS: '1741906968',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/8210653479?__cf_chl_f_tk=ySgX4zMDLemws88fKU4OdM7PA6qIQo7W6mzCHD7Q_Lo-1741906968-1.0.1.1-SRyRaYT0k95w3pc_xK2.a.cuAqXiLkhMLWeZH_PM3Nk",md: "ciS4bhDXi8KgW.0v.EKTzPmDnMCvIGhuHILs3mGx7Ws-1741906968-1.2.1.1-jZC4IRbcYi6_D3bDzSJNaB_dzYNOPqi9nEBPdLrfpX2WCzfNmXWO9EoUoWj.MeoziMLhvgq2u2UE4gkE81yAB22OKPllRtEdK.fWcYZsmb7nQibgICHF3xnluX2PCEAb1XTqgJI7a2ilsP_yTp3sLJwZT4TyKoCxuKyb7WvWMgnmzlETk0cjUKLtGdYaf56chE2kZOKzXlZ9CQG3nGsIfSEhEjmsXfoxZUHVwoYNc2BD2uBRQ82YYoeyTvOM2LVozEAqLR9CT0PEdfRb7HgKMA17gydbcYe5P2tut5WIn7l2Ib8sZ4pGtwwpKQoXdt8Ulk1TbBg7VWHhqWGLh5Ed9MPSabBmfvZ6FEYbDVGZuFmUmVOtT_dgubjt8xgyzSBmdkMYotmBLBaU3P4ECq54iyCzWQOoYQj.Yx3bsA9xjEju4DGcz4YETsGB7EdH09P25uKbJezTS1ZGs9ir0MrAiZxcgBoI.8axLPvFWWHZ709u6YWWwVIIFRZv.6VsQPEWlpjBhY5td0iZK6tlqiEvd6lIdCOhQeV8SPv.MgDGn5BEP8wxyLkzi.FWndBFd0CsEqWKCoBhbaBCALCI1zcufTDmSHJGvtkScdJPZbMOt0gn2YeK9EbBjQS6tjdaSmVXiI.Hfel_j5d8rK4aJQaI4R7Jzba7fBUkhYHhJF.EuuJVayxp23A1B4K85UG4aHcsPS8P7FI3C7wKSJom_hv2dUm6sO6dufTFJoMJCEKRYHrx3hqDXhXqtUQTu_mvXF4jaXCbzAKyhFzse_lAtjbus7pGe2h4GounxtdH9Z8Ba5CNtuZOYr4BQlUG9UovZzB.U5_vK89r5ciF_2OubfrJcMgFT_PRRvpBq03BsMBlDV0_jk3xvt4ApZWCHiivkL1cmh.xGI9KccNI8xQlMsVRb12oGRE53QrCYEqnwg5LO8uiN77pmYEUQzlagaj9oDlR8VMPyWNJ76SRr7DO9_6mBQ",mdrd: "GhB7HvhU6yjUpr_pwb4_WxKfVGg4yiGMpXvgBvWlHT0-1741906968-1.2.1.1-MPZNfoeU859o15DnecvtfI0OI2RssxH2_FDdxUC4cwWBFn6OgeUTGrtJnO_QjozBxURQAkQMuITByrnvgEGMQPWXz78EWRkclnEBtiD60.LJOiBvDh0G7UiwDaMzxSSSlFkmTcVwwYAwqIy5c66AWT_a.nfRnbffO.7D6FOZX_r0Or8GtkUbBmFHeYw5UJJFskFiXBdQAysHWQQbNs9vqHtmVeEB5AbjTs0DbYL3p7HGiYygcDXxjWY.vx08rznVhE6yjGotyIL4OktPwucI2sVxMNC_SPPLw3bpD.at1d3DC2yH0cdrWZ73wgU5ni2PGj0FQ1O9vNUKQNkg2AbWKgsB6Sv1X0.Hyicyafhdxv01HTQQh1fuQNNPRKXxtaZ1gDZRSEyEGifTtUBsi7nNqyBKvKJyDRFqEWebphfxL79OD6P_pqpv6Wr0kY44BpQSmYCTYx3I.6nlJTgldZslACxCuwBl0b83g7Wg_fAUEwrrzfBcIlrlzxur2rnXQBg48lLFW_vTGuvMuLIIjdZ.XgvybD3hHxfC.XHBrbwY1wMrX8aM22G5GbtumI4GF_6qLlmJCZGMMkg3kerrD5naQ9AOXjJg.8WFe_0IboF3trgKuJFPtV5lFGHFcg3PIrGnMUOKSuoQPj1Hdawrxo9LAP8k3Em0wbyY6uf0clPH9fQovmbz1SQE05sQMOYdwUnRhMiLNnLUtyqzYbtEMGjkMezn6LvyDTkNstfJlSr6UoZMqSdU7WFpkN5UeQTCL334xIn6eR1SowSe9AGjtvP.pkMw6QVwAgO3GZCiE4nOXtz4Emic7XFOXbZsruqxOWIbA3g4JamsbyBEvjxQOu75WvSnLEFFEDSA7LJDLRcW68bbBxfK81f.8q9jNJjbjb7atAP31Nk9MBoMY8DxQkl3YTeh6.LXacvQGrAta9fD1rYEhzcxbm7AsfVDyW4KBn9wIhbMVGCjaOZSImeUWRtD9J0bE41MapfUYbj1i_Qd6BekhFqe.KLkhIavZ1NiYEgQypUiNcQ7DjrJcqxzANTKFeN2mGSywpscUB8LKAhBI8tvc9_sdsnL_FenF_mJ0tN6TwOV8K1ccp7AFwlQn_WRPTnvnCgoLDS2yYxeoB7llXDgs6NyidZ5HVJXrY4R2fTAu8xLQi5P648QpjM66U2aDY_vpU_8iwgYjZ8.F8vzgG5iO8Gv2ZR_tS0lwEll7Pb7fnpTyXGxxNecvEHxGpby3_F3D.AyCd6IYlVn_WTmt0U8YI42evkn172Zukw7gZxcmGAWjab2CCm5n5mAVVKaD5eRUHhcfBW3KuN6bBAvNvLtNEgmCQp4vFPy9H2p5EfvbWXjBYt8L12coU53J_jglOk6HYTb5IWKD6NTQOkFuh1P4c0zOgX._WKELqjfPSW9cuddWlrWAYHZVt0o7gJ2quDk6gOcuys2x5JYkmNIt.VMzaEuAvgSOGPNYEXhNtpbtC2weHY2euMZTufRw5rz2MOTtjI12.iYuc81JJ_QpVK01BIVi8f371DJTnE5NWGQj1c.2O0EbrfVF4A4fCh1hlwPv9XW6pVZlOMQvlHWeAyznE7xBSsUaIn648EwL8.z1o0GPIAx9yu1jYUpeMw5yKxAxbZQQdGOIH6By9AtxiIuuvPIA.Kp.wb.pwqEo4rbLBHhhOyDTrsCn8II4EWNiy3TqY3GlKPiBK5_OovUH8PG7mcXbSorJY3rR85_.z4U1yugMsB5NwfKweEElgVKhQghJKFLakbJy5SdGySz_BJP9tuTTCLlwHzYvxBug3kfWXStQ1_Psub_8PiTszg50LSmQRsmdHrVTdL7BUh0Ani3bF.EKWZPaLpPfKXmSxz7V9bb8t3.gFU.4uzmIJlZWiTG7_C8okpWEuwFWhc_0MKKlB231Bq7bSrU5ysAjfPcpBdmLj_LQJeh1Cocs7sMnBQVUnuW6pySD0XhapvjO_E"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91ff293aa81d5962';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\/8210653479?__cf_chl_rt_tk=ySgX4zMDLemws88fKU4OdM7PA6qIQo7W6mzCHD7Q_Lo-1741906968-1.0.1.1-SRyRaYT0k95w3pc_xK2.a.cuAqXiLkhMLWeZH_PM3Nk" + 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