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-aff8p9et4.mit-edu.top/post/0869312754

  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-aff8p9et4.mit-edu.top",cType: 'managed',cRay: '90f7ba615bd83976',cH: '8DquPghjb9BPf2.TWSkmCIIX8Z9SyT_yYd5hXxnyZbU-1739144673-1.2.1.1-iyWDn249s8yjMGLW6xIjmpaDGdvdENvq.2EA53mZvnkPIx1W8OOitU2QLnEBefde',cUPMDTk: "\/post\/0869312754?__cf_chl_tk=or3IdU4w1VNC5TKYi8bQ8pO2Q77a5ir5oBx.VNHUbbY-1739144673-1.0.1.1-WcI2GQy_pQc1nwJOErfDeRG86B.IAog6yHihq33sKJY",cFPWv: 'g',cITimeS: '1739144673',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/0869312754?__cf_chl_f_tk=or3IdU4w1VNC5TKYi8bQ8pO2Q77a5ir5oBx.VNHUbbY-1739144673-1.0.1.1-WcI2GQy_pQc1nwJOErfDeRG86B.IAog6yHihq33sKJY",md: "VD5LqYo1AjYSuhVwT_MlBgrn1VarZwMdYBlOBg7W5Mo-1739144673-1.2.1.1-JsiZntKPKnIyyMjtQFNbFo1OwHyM9F_cY7aAqrPSVbjktInWtgALKWbb19D3Lf0d0.aqICCLCTMIGyhdcSbXC_53foGyiVd4Xr8VoDEDsrvg7JbvZ9L5y29c7rhpHxbySXJFewk9RTYsquPqaMP_AukiU8ck3lqcGJg2dX3llRLW9k8fFR4DDgQoHY0gPzI1ENSzPAktYik_zm8YRbXMiPi0Fr8UFu7tBE49cULTL26_Nj_yegJs6sZyUBThMOfmaPTm9Nwq5nAFas5BDIxz6iO9snB4PtUAOe8duL_p6ojKxg2NeP4Gc8CZq6pUExgK99lzIHKhgYSWS42v3ZytnUJp9a4XTO65zetUjeJpxAyKfiPmj6Sm37P40wbS5fYS4dHr3DMLxciabIBEyCKce5Mvkf2Tes07kdV_49n51P9.ebLEwsmYugfuTsHqPXormpIfkOHXZ5xOy7EMmvM763hC9QG86nYNt9SVxK.azGSJrxKEH_lackRItpJ15oBjCWPwDseoDy8DxZ9WjwRQ4TLkSAUkV5bSzxdOcjY8yuRrnDGcVGEzjDmCE54Sx1eLtuqGeltdFLkrIFjEUdUR.KghHgDDKJojn9QYCEWdXeFMbsWHwQeJ4NjW80tRYM_pMghTJSHWN2awSuWfJG.sqaR9pecAiMxMANwZoTp90eUfxO77_HbC4rPIuS3XWPK5IluiAFeDN_P6TR1BXuzMETBMDa7uDgqiMZrcrcVU3F_QesJk4IGFSShH_EjeJUg6RxfZU9JrrziQ73O5AYxxmGv4itSKUbpAkcEVXS46rI_Lj1ifXMNAYZsQ5GSl3O_h38Jpb6xNGZYVf36RftQdXwlwh0gkzH_yqpNU2HmC2VyrWFIUafzdNuuaXZAacUb6tN9g06NE9a7tn3QFAQSagSPUs.r1Ow2WOf1g.jMEGo3FR5mABvTWFT2GVglvVOtdol16xXfjZT2_ZeDayi_hvaoeFHBfFFLbE.HI560tRPId0nSZ1JCO6HzVcjwuyS4lgHSELL.BuCO9swgLQ9fbqvsgSSo_TdfFjcmCkvljpZKBUgQm9KvH75m3KfyMiCQ_RHM114c2Fj12xb4xzQxUa9Qdd0gqHYQj4CGb9rQYbwVESvFUcjlski7UPtOEIZ3rslsT_L6egK74RxnXqde_4Q7SnwFSWoF7Pthy7tp7zeonlO3GTnsg1Vy4tosF885iv7K984DSAGZKpufDDfltT1AWmHdKfXEapg7ct9wmPmRxLCKBzRjksgDbL_l64f0XAbQRXeF.YbYJ2vlegAQGDA9iIYNcp7FfErP8eyID92wzUb.USFbVyui7wlkI1U1aRZn_0SIzc5UHLyE.8YZIBfoO_rbGWdqaZ5N5Nzzqa1Nrh3AEtuQSa9FzVtcpysTxEPxVqs05bNszhxQLxS5WClltGr1lBWXoKh2utN1M7Ans5P8oNuChxMW5I0_y1FR8jtXxtQj2XsjS4OpO4Mk0gU1SwbSei9SX8JjlWGKr8lVjz3n3Z80c7YG78E5Lq8BlhOMUTTWz4rTsFPFEnKjY4mxci1YxPsD5eaYuZaW03VbU0Sy8GJtsmLsv.mthsCQ_jCsO08R3xez_kMw8v1sy16wn0BPZ1QyPzsSFqy5e2J_utFIlizQ2Nr8GJTj4803bv72yqD5Yn0hqXJPKhACmPO1fUlDfyH0kEm7U.7ebiUbRHGkf957YeL5RFqdumJK00WLVBzaSjfmXS71rSLewp0ZzA9FhsQTrEYFOvNXw0oe2zpOC9sj0XZCe.cdWDXwDzMFPihTdqq7w7Uq5BY9JdyDJUMDs5zpxzOO4.kuovIHUVib6pCcWENq12fDKE3i_.bKvJKpemzBoZ.iuSWCfFKKxZozD6zTv1bOq.Ap6bAGue_gjeqcHUJoWN4i2KunDSgfKGAYTHyAssnQUh61XJ9f3HPEwewwTitOwJtEaAGDBJDPWrdB9BUyvTKdzBejhsbgwM5N3fSpHk5OWYlyv4_aGlm3o9zL4eSgBi9WQUgZNZpIjVcRd2FyW9QkmGTbwzKeVsZbSpcan5qZxdwHCNsq_2l68Rl1K3CaXjvjsVqKnMMd2mRPKyJFk5ijcyJFdYAlW8gQjhbriDI49B_a4iWLng9SDZAFAtBtcC57..YdAxjsjlwcOpGlreXVGqjSEAWq0sEmX0ZKGWzucE6eWY1eWEFMQ_iwPwZRxA_6RyIBwf6rhK_H.INza7iKu8Ldz",mdrd: "18lf0mVMJRo1KcOhb6MhCGVWCSUqfdWQXCR8s4bjSB0-1739144673-1.2.1.1-CMlpqud_2Z7nEcvYtAGi_ZeVUwrgUXcErBvirNQQUZ7wxT_81PQtfAfgd1CXd90FiZccVRwbeAmCd0.74Ll8PwlsNSsW3LfcdcwgoPCR1dFYbLPdMpmixRY4iKjDQXtuoCxYrvc0XvQNOMY1gSI9nSWJicNhXpdCeo6QpmcMuiNEGuk_Un_r0w7ppQDR5afIDWgKF0aDyvuUoOtKqKVAHQuSLyf0Ngbs4i5LWBYEOIb7f6l6ycYf8tBrC0eVbEpUOJHPmyC0c1ICK4XfDVGL2qByV6ns6Y2zVnB7xLhGiQm3jp_31Od0s.Dn6VzGaTWXi_IAF4Bb5vUq.kNMynUhDl4oZxpIh_8JUHpd2sxHw1XhAGtHQSaG0SpeMeYxb_sleKGYCOAakL7.GdKnaq29iqU37dTZizwlYY5djvYQqSBAn9syQAClWNKLCx1hIsIsl4.YiBhm0y2brAwoXkIExCJXz07BZvqb5OF.xKIaRVhf6uWMS88C6KpavVJijfr.Yn8hcYCdXlOlTLO_fxEX6sBWHxX1CGhQi9TMBiS90nr1FRz3WFTGvO5VOU8jC.gPc7E55Zp3s3b5L6s8Ji4bwJYZxfpWc9NC7r96a2VQqrgMUTqj18MXdNpEVwldHQ9AZKLEvB2cGum98tIUf9UIw6HWOjIVK3pt1942EjNfkwWjm0CMuIQ5XCm3VchzCtSMqJt5tvX1yjI_h8xt.AHH4C7soB0N7eNdhKuX3ASR4LJ2RZLDBtto1Kj2BQ7lwz5pplICfqLVrsulhOA2xJkgTN_xih.g4v5Zyf1v5vDXhsEdAxj1clBmHtZOwpWfG8Uga3gOsRSFecVjsS_4wOiTCZ5jddURANsPyd.3Dcj6zPHy_wuBMfGK9Is7NwZ3l7H638TdGNGlvIr.pRaIQeT1daqINnqgtm1BOG5o9yTDJ7Vy.SFDU.EJD6E.DaXYzzObSZXYqKE32Flw6uRCPfxsPeJJenjimdpQ19LWPpbXmCTrDeTjDeSNVCV3vaUV3Tmgxvm0tO5osx3TK5y_jKCWX8fmKopV95LbHtIu4Y2l2Rxm1b7nPQESBieW4B4UJLN8U112o9jzRoqNBPE.OKe6ltp7PtvE7DGZreVx8sdAFdvFImWfQicVI9bCOm27AUcXCFANxvd3H9C0RnQpxFXa5dmj628J7BVHZWv6gjEGy5kFEQgpROyOUee2KNJLN4l7xweu4N7fUFweWhDviT40b8q7H2DCgpXa6qEZd_LJs61g1p6savavNpLQF8s1WbSDFNlk7yWpJu9F5wEjkgc.TptqC.2uf4ZjwCkeaoRY6qSwfOWuxHJJDZT0823D5ZQy7k7.oUJIZB7CH.aqGOxKFHr5pFKE7VS.N9pIZIF6oN4maqY7rkls_7pqB.0pNmk1qbge1iLuU39VTGYdwRAdjpApnzPS14N_kxtR1Da_B0dPdP.H06l9Gv0AQkkeMtihEmagTeQg.VecVJzSnA1DSDAd0lB4xslZMO.sQEDAKudQ0hOzGmRBJQXhTDmBzAmsiZJZ2M3G8J_nWsLrujMY0IFTESTqBdW14Nsswz7OXUkuspEE5n52SvPCu9BAftvKns_l0x8E2XnPm3pvkM4OvxahynDt_DQvVaOna2GRxze8GaviOfx7sZPO7J2dnLSukJuCV_0WuSY9AZ40ACWqAXKWzj4cksRJdu1_FNTS.7mN_DS9nK.LglbwQIx2mlGGLcmvnw_HjFGdWW_Xe3ukNwBpFlfntMnhodcKvZvHkpGlmSnxMNDfFzrSuHoPT1GomryM0W8xR3hBdBY1VTU_Ng"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f7ba615bd83976';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\/0869312754?__cf_chl_rt_tk=or3IdU4w1VNC5TKYi8bQ8pO2Q77a5ir5oBx.VNHUbbY-1739144673-1.0.1.1-WcI2GQy_pQc1nwJOErfDeRG86B.IAog6yHihq33sKJY" + 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