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-afft0vjua.mit-edu.top/post/1542693780

  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-afft0vjua.mit-edu.top",cType: 'managed',cRay: '90fcfe196877c930',cH: 'EuqC7BHHBI22ZqTuABEII5czERn.xrw0724XlhitZK4-1739199876-1.2.1.1-JbJ2KdLV2PsGEzkD8...wcKx2qIRWnzpkVhZcE5a8tMonlp3WaK.3uiyVrVzMcqp',cUPMDTk: "\/post\/1542693780?__cf_chl_tk=PTNSKnZWnGOFxVLqosDGQpG9rzfzKUGMYMTinoyzoF4-1739199876-1.0.1.1-OM9G.B.C92QZ8PZC1Ozc3.Y4O_nnNy8ZIuZZ34NZ07c",cFPWv: 'g',cITimeS: '1739199876',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/1542693780?__cf_chl_f_tk=PTNSKnZWnGOFxVLqosDGQpG9rzfzKUGMYMTinoyzoF4-1739199876-1.0.1.1-OM9G.B.C92QZ8PZC1Ozc3.Y4O_nnNy8ZIuZZ34NZ07c",md: "2zxYaV1EeBEkJkHUq96E.Y675pKF3hPtZ9z5tDzK9nc-1739199876-1.2.1.1-HX04QOMefABb60pqT6f8hUn6lyYWXyMuaO4y9ywYMKJ_hrgwBk0yrTwApc0qze.bpEiSzHdGvXeNwLvQ8JC_aoe.vjx1u2rGyDjpydUQF89ezJ_JVFtpVyG8mciRPMOzPU6NsFDOuvJ.6NALN2VLCM0uxl6egpTw6L_XhKC0xU3EY79_0qzwSnvmitrYg6Rg5_qXydSDhvyEOflm6pVAu9qVT1Mb1hBJwk9FpBjsJXSQ1kgssWdcDOUdvvtimtCP1wUEuU209z1daZ_LnxnuSiMbOde6ueg2rrDHvacvdX27FkszkdFOS9VhpGnrszZtjrPDzaF7ZVicklWOdVrNURkDq5vhwE3OKB0oyM5a9ggFkwe9HBc_FvJmiZf2urJlUrPIVvzz4YYzsZ5bKPPlxXL1sPk4zItyUWHPxQS_3mjn2Pv5SU8Ca0w95ZaAh0IFMHQp75Bg0NWgtdvY7_.o1jxFjJGjD5p7hVFqDbourZiNNPYVRCuPgdOd_BFyX5Kd41y3Tmex.44Tuu1ilanUiUCh7Ov2I.tcxY51PWnZdVQQPHKzbzmnP7Lg9pRXMDlNXT0IA4nkS3BZ06vHCEGVnusfEiPqJbYLfd1ExL_FWp5rlLK.pdVCrATcoH_AWO5ITPfIPFV1JvCwFbYx4_isP9_50QqkvNGmH3eN_nDRG8Pt9a.QkGtyFfxzS14u9KpD66gJZP.tCqIfwXQyHH2MciCTR4KrGLMC_ToTUWQoz87J4OH3sU190kSgz7mdVl12Z0FsjLq_JuvT9hP7MSqB_SaH1vTI_gGGsLMv4WPSD8x7cczqSWIbKUL9RfUam9kvu2ZdK3CEF1ICdcsjwepNj.28_0tWI2OxUGzyzGeTyINnZ4PTPEP6p.8nXKxI.Qb_tPYAmNvJsCvX1UqN2cIm3.K.LnP14D9fBCY.FnjupYRTKJ1_RZPMcbLFEOpHQB3QeeRJi4ohxu7tZisvZjR3HYNWAdAmgM6Wa5bo8REMjy0Zx6_o3RJGRrlijDcyuzT04WQf7MctGO1AQ_CMScfWP.KziAp9KIsqyTbAfFwX2WGXXoo4ABbHmT8ThX5dEE8dRKc4e54APQeCIkoRSdZ1rrTTqoQHiNSOTCU1UYOoAbwlEq3tLKTUTyBRnL9gSLmp7iejvuxdoGsykP34hK7VhqMmULszg49VyG_9K7UZLHJdN2tiPcXi_iGWHvwDuNvaozfgViZHJNaSdxfB9hvTP_NqJ2JAf1crmG9dN8kitQ1sB0_sCYbKm5GYPmrGL1SktpToV1A1s94sfscQnax35iKaTqM9K2.ueYLlKcd2Cgh4ZYLrR19xVe5UJU.LoEcppPSob82OKxPwoO.heAjp29oUoCfvhwsSJbXCsoYDSSxhTLe75pGQCsGUXGngxBHBPSq6AZIumK50bcLQ.nw5IEtiMaAAzGbr0bxAp_FysQ8PdArd0s5KkCh8NQzLcebJf9DtHYlNJ6udni4nWLSArRCS35a5sD4nx6nwT2vUj7qIJGCFTDCKFX57ydjhyFXHbhfTVdbhDCJoPk2iZaH3Gol0NjPqH8rT5Z9Wga4QcC69E7oXH8dlS6Y9hUWKTUBk.aYE7RhKxHeK7iorRk24.JvyoyibGTAu8G783rSOG2ZqBQt5xZiOp2ZOdE8rxlQzm2aIxZDhwJge55o_4EkIXRnlOzDikayW667G4bEH0D9KQ7gs6T7Clj38pbgfhCS.AKejHWQd6FXBDCnJO6nn6tBkrURYT7tdTV4.ewqB4ElU..BLc7Mc1HVvhM_wXbS.n0H.nUMUfkToj0Byzuu43VPBc1W.azyUkA3T4x6_R7zDsbkc5cBuewz2zBe0ddNwG7cwyqHXI3nJb_sHqyUpMoSaDYXsHXo641HpXIS4jNifcBzhN3Hu77a5iMwJEfqTGd_vZPOLrUQqZLIBQrAk1V8X0hV.N83PvXtN0iEK7jpT5OF_evoi_w82yGuTKFBz5i.X4cDvDm6azYp9u85fqxEabfK5z6Gs8HuhD5zHN7oIiCQPgtt3Tea6dYAceHtYxtbYN5CgN0QZEn4DFDIt3y8rQ_ePC0Lb3gc6nDuNwbWc.BmaIXWD6YQDJp9UDplncwlOsQndIpIqNsCiyzgSF7DgFz7.BPEAz1bQDN22EqTF1eOyuVvirZktdA0Rj1r_YJ_dginak3.4C56.FCT3Fa9VYXlx6Adk2LeN9Zz0DyrRbbll8HHhdfpNe9LLU_JD",mdrd: "VDNQoHYAhrKZ7FaZGZzKM.ml2KTajmyQghFn6GeckI4-1739199876-1.2.1.1-ggmfkI3nWsGC3uCo1DTWPb3qmMBZGCi8XXYwLNAKL62kyPGZd3E0RyD6f4UVUhxz.9ciXyrtxsHyVFSuKPh5vLP90CApGmL69YivNexzxvdpZfHVa4dWmSnXwY2Gbv2zSo7liuTm1dP4eD3zTcIsQ.6q8JnJ1SFEizfqy2vv0gSKc7o8BI8qivLfj5s2I.NsVR9LEcTonZVR1BDU2dN4Od4QclElbpra2lIJBvbBvlu8L0ojbJAfYgipjbDden_5vbBOaR2vFlm2jLLLv1y_q.wXxZnERlbJAwE.24WL_AZWsfLafBhFLNQZY2dn08NAq6n3EKrz3iOFaiY1BsP7P.cdTKkyromIjpizRkXLlAaWnxwZFVpeH1KpuZFSOPwGJVj1Q4odnpTLIQ_T0rx.fDz8._5f3MIOKkRD9fll1PvCIcdyvvgXFCNT5loXhSCfm11FHHDsltBUTjphyNYt1bp44WC8qcDvBaZ6eXm3nWr2Lt6lDDI0B76IrZhaw95CUR2uLlj0WBoJA8JVBqSmHoFpYTAj1AbyD7ZY6J3ITGZ6N5qCRXPUTnGvONsc0NcR3TdTTS7sxVOge4ohXPTCdNJITXYsrzuVfTlcFymYhtl4vLz5oXJ5.X1iJFOM0_z8FQetqbUQdlVoXSfzaJwSqu.sBaJnq5CLmmyMdHPrqjGtGOQrVrO00zWGi9oWY4V1XI.d1_VJ4qODZOmKfAo9FVRLqA9dbxrVVo5zvrU7o9TYa4ckQyXmUG2uTzbwOpyzbVIjDvTQVWeGb14jl3TNhQ6llDHphyvrZiDMc6LOgdCzkNyhozvX_Fezf09bjcsh6l7e0RBTuuY0WjbkcpskATVoclMvBBxRq8HGSOTkN.v7dymyJpv9SNh3HUGe4n3xR4_0eV2reW2X.8mSjZakfKKvfZMujdbHgMQMSNSDq5ag9_1vYYGt.nR3jtwxTnt42ZegcsFVhzXu5O7C._2hqL_8zfmjoO74YDPlxmaijdeV5lz6uAXs74R1oWdCIxW_IyXKkXfqzODrR4DFH_S0sXOTOI3cOGuBkPSj.ct8S9L.AdiMwI5OEE6w.cpprm43brqZaI3lnPC5fzABuwvd.l.i_SBbb9WqAWgajjHEclzzGcfEM_e.l__x8HtF8PcAHFq8mauj5xh9c65E.RTFYHFyYlnkRNzhAro1Hf5LcOXBC_mieuReep4b618IDoDX0xyRh4dnj0Whs1vO_eO3WcCeyqWcXuxHCgswuwqi6CNpgsbNjRblZLx8lPEemx_wwpFkGNfl7D22eecZV072RwStmnmNNv.Yuqj_cYBMl3G036y24hVgbClW.QRipV8wXp3OyKNP0UTdUtnasGgMxiy8isQCcuFpoFFyVDHP7.yfmPCR9eNrHyzMVyaqz_l4AZTRMVTUqxeY0OBOVfwOYM78WsMOBJaE5ytAvRWrl3DvobP9zmW9c44Om0.Ak6LlESyDW2bybKZmHz3L8poqtZd6yEY6WRccD3kneqTkBlfj6MHQA0JfF.8A6PNCKMiAw3qybuBWGLzJN5CsMybAgPlwBsM1GYEfvrmw39G1ahFQ_.ZlPRl3MAVx8u.5bnPRTeAr4mLvnyn0cHeiw.83DhFoguYH53zqdjqC1M1aqRYA.Z9vBwbpIswIifHHMx3Ojj3VSsOUpPXkX0ZuCXcpfKjEEZnwLa56MOO597W0qqs4s7biK58by.fep.oIntP2V6qtejXMlMB6PHom1lE9At68HJ7FhxWSbPv6PyfMgMlD_IsW7Kuf9zNYXfowMQG15Uxvv2S5dfycRhPqhcw.eioJ.uTABBbixvSXKYwN4VY"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fcfe196877c930';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\/1542693780?__cf_chl_rt_tk=PTNSKnZWnGOFxVLqosDGQpG9rzfzKUGMYMTinoyzoF4-1739199876-1.0.1.1-OM9G.B.C92QZ8PZC1Ozc3.Y4O_nnNy8ZIuZZ34NZ07c" + 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