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-affl8vjbx.mit-edu.top/post/4270153986

  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-affl8vjbx.mit-edu.top",cType: 'managed',cRay: '91105b97dcfe6c71',cH: 'MZie9kIRkmNhs.vzJ1vDMhEHI8RcIA0PzsJRBZAs1Po-1739402935-1.2.1.1-TnBzn4FiD.OUNX_pog2yaxYlJ_6kh8CJvu8ebqTo2uh7WHtfHxc_TSBjBfRfYNbO',cUPMDTk: "\/post\/4270153986?__cf_chl_tk=6K6WxQYp.QWO1MNiTa10fmRQnKdcFwuHBsmunRN3iSo-1739402935-1.0.1.1-ItIy10hvzFB_qRUN5j7BVLuxoWDqyUEEXHejBhNNSPg",cFPWv: 'b',cITimeS: '1739402935',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/4270153986?__cf_chl_f_tk=6K6WxQYp.QWO1MNiTa10fmRQnKdcFwuHBsmunRN3iSo-1739402935-1.0.1.1-ItIy10hvzFB_qRUN5j7BVLuxoWDqyUEEXHejBhNNSPg",md: "di4i83BkUM2ljZm5fklzk5psfxcfwRcYe.T.HKk1jsc-1739402935-1.2.1.1-LW.HuToOw5cHvuH.wNLYNrR_Bz_OBxt32EyEEOCJ6v9A.XVC_ptytTEluzFFWTteogWXFh2y4ZS.nRn6mKQ8epcQ7HQZ567XOgR5vlvFTLM3ri5lnZWElOoYHI0bNld5hPYGY1MDXPaMhy7oRavWXKJR1SHtebnfBSMOtjqACWB68kbtHo8s6mUT1DDAzH.02BHHScisrkjQYa1c2x.93LODA3ViFiK.6ULXZvdPuPa953472f.MuMqJrpt040Q6NcJ.2NpscxiPAdzcCRWYyoSkk4.05Zgkr44GJP46Cj7OKNf6jIXpyuNlJ13AWwjIs1QPi0S7TojENzOY7KF.tWtDXs1FVsSQzRf5swsNWCxCdXT2_FQtO3hIZTUo4nBctD0E93QFxdu1MDpJV3W0YkL2cCgkVvgFVELLd_kbRbfqMJbRPNgtXSxLkFCj7K8OS_Oc.IZfNAglC32VqrGbBvKMa.Z.YoIqG6YJ3lrOpJtuykSLsL.HwEjf_jaiPWIbpHxRitxPg3moQ6RfMoACt7IN5xNLQoOZ5bgyDg3KKcv1Fd41uMNEQWnJCKKdtEUE7AWsUpI2p_wPolT5rIAXN46AglVZIVwOl_LIJX_.iIdfCMs3zh_7O9CT1cvXcSVYpcts1su84.xIJ_CQ.TwemTnpEn6g7zSt6KWxlUHrrdljPrnRh06a.WVzcimWnUFJ2nDNt68VGy89iQIPBuCUEM9T0_ZM9Kzxc7.awC8kqZaXZF19fuVtOQCoDcxBrhzpEZsPS67iK3zag_QGH09g7Ni3nVeeFV01XJyZgEQtR7VhdeOXwm2ie1e.mrNrm6Y8xuxQ13Q9imkRTBQSuEe4IDr_wCVFQidPHGgD9LRBP3WT2gpncsKOmlXBRy925pCIkpLPneU6oUu0CLQn56CInjBXzlfOTzn_MY788LlNxMjQxcGn4OWizlwi74NtV0WxkqiYMHt_fS3b4lR7mWCM7E49Ac1dyFtNAfyhhq6rVW5I1k3nmJ12Vci1bYTNvnqOIW.ARZ2zWfulBjSmnvgwigkhdjgDxhre7Y5V_SF0VCEKw8mp.u.QacC_E0ujiHk0LXCwk8s25x1PIVmU1Htn8qIYF3CigXiwTub49iU1dc1APU1PYqYQFLaIhOb4TVzaoq4zRI4L7TYFCI_wc.NrNT15S67abfSaB0ez6l5kknHTPysW9lCyyDZjt_X_Fppep129YlS.fyPik04CmAq9j1C9xvWhyOswTXe6v1VXLfvh0ekEr__mUt6QH6wR_AFdmx8YRV8n8aRp4g2DBxH4L1NYIWTdlY4Ul_2GQ.KZCafIjvkPWQ4cSHRgEfNXh1rbG2J79QOYhmomz3Q9r_mI7_SVK7uX3pTRH_6s0fqITtZJzEomaKdkZ1YAtqH9ZrL.A5IWu_RerqNX1CMTC3Oah3q10ap11ucWk2W6FEEyTnMXHROoRaQbsDD8.3GFMHcEDIqwxN9IKIJ4uA7JdiGK9s47CNtedj5NNXGJL7VaJPeY9hmTTOukc_oISIaCilLU2J77xJebu1IVYpsa2utFagFOTSBt9XlIUae1CWXRo2eK30VD10dexeFyp0hcUm7PDtHU2rHJmWksWpaeQY42.3JOOmrQ2miTjJ3RA4.VOMpkVqGCjWqatpGIu5yxw3E2B4copYDVrwtMaGn2or74ckIRzcLSVs8P7sBTV8qEeG6O3sLJ5MpJMiDTtT2M7JNG9D1XtrtT0l2EJTZ_vJLYSY1qgesF4dnVpTNAlTydpy1d781.QQq6w1.zPdJbpfLa4f8oexUn59GxEXWGbMhVgJHOC2kY3jo3hVjZyrDwprISsv57ZMzux5vLxE_yLJzr.OMAQu3yoKobsNOPCOlbjV25zvO6BLcQgXDLZiJO0HM.wFzjN.c7ynxVH3IHy7lz06dBX6hcFKfgi33dBtwiJtdeWnEO3sumZWg2DrON3hQSZfp9cphqV.LlsOzlwYC_Mmio.iwIzJPcRFLhbxPyjwsjeUWVx0VcEQB98UGXSwjZj8I9_BShO0.UknMFsOPCZtfQu5A0T3SLN.gZl4PysLvCKWfpCalQHk.2w_8g7WNLqDb1NhsE4v2Lx93N_Zz94tpB9ev4RhNWgDgHS1oz0A.V8Mjr3atHziRJFKyAggJuUU25FMg7e7_kTJ7H6n.goq8j5RnX57PQ7WdUQggyQoA8QKvUcZPgyH8XW2SCZt01yBH0hvg2gFphz00FEOUG",mdrd: ".nzBmxOeNsDuBqOMyQutzAIAUxNE5riCnxCsSy9hzDM-1739402935-1.2.1.1-ZAcpztwigC3XPBS3Z4u2_Yhy5NhEmSDgV0n2WIWAe6SvywpQ1K9u65j1WZXKWGC1d.xRG95GVlUilOW45zqWw6v9.VDZkMS4LcZgBjFTkm9Ycu1033zwQFbeusKqORSNeCiyD61_HDbeR8lCzanYWlstj_1_slHmTvUsCjpay7gRwqjRiCWl.HAL0kGnl5Dh00rIgMlbChoetjPsKpUlloy1TpCgiw6gQPJxOxBmnhsULJ2NXzy9yQCyBejjZ4L_YtvkJ2L1ocBCDbEWRwCvybIMWBZddkJmd_uUmXg7w4hePqriWdm_OwrbmD34gUccxlbbZqzvFT.AZnOvMtya5GakfBAoiQza0uv.W2FuXnieQFKk2OS31CI_hqRubfwkclfsTO.j5NSEe7yyREYp_dAdAYN9AW84jG1oL5457ydjdtcphkC0x_vh51HeX5lExGae1fCXfc5Hy7p0hGhLnHrjvr6Ef4ymG8RjaIWkMIjlH7fzGFHzVZ2BiC49x31wJkrkbL_4X.NSp1_Wa30bul8xowUdudurIBPZBHBP5Nr702YXaUoqnmYzlAp8xQiDj0_VzkjSvVSsCBRYS8XaySx9IGs_BEHp4hRqXrNp.EAqVlca38APzQJyb_H.G6bfjFDcXej1eZW8gRjjtqYPbf_C29T5E_sRQYtfbD8VGYtOjtdPe2i4QVBMwtu2FhjAfKaB6hpC1Y.Wm0bYdlQj4ECdQ3MTUb5ZAE.FyGG0E3jSJ9Z7iwkKvcUxvm51clNYCl4f5qKJERnAANij7ObypdKP9nb3dOD.lK8qTmwuYvk9RoFXIf3HDtqltLHJGMoNyiG5o6DSKffyqDz7SU5pkqoCb1v1PbUcDwyyQZWJSRGclayswV7Pbui9n3ZaxCYXiO9200VH.l934scUxUCsKhIMKM_AzNTzQfucj9xRPL7jl4Mwq0nFXMW_vqiWa_f0dRaBm5_RLuCK6r9.uQmeeZznxQQnv7bLTkwe0dD8Bvrlim7tddYyj3En2C5J2ZjQfBagZ1lYfs2fFhHI0f9eqF9oiNNuFDWVRdazG6KJPhGU76vfJ4_8L6fn6RgSqqhxzWkaJKFr9nK_TzfV3_fQVFKNdr8O1r.XW0Fl7kgHqL6HV36exvJU5_fY8Fk7_moZ7je7Ir0M1H9vHTCOySNFW_BR1q9FyjPQ5m6vXSwh.uJ312tT.wCC8bMPhPr835ngB1IyaEDQJ7SNvnc8mR58xytoO7v9eBadi9piIZziFC9u6AQgNx7IYuSok_n7XLfn8zgeN6___gQzH5ZZWqqMLy39o_ObpVpK.oCf7ZA6RUKy36j4XekdpHexVWorfWuqMdSu7YqvFvYJ3xJpMqlHVEEu06HNOMB6TZM0XBOn3q1r9IyP31vMr8XmRcHRSRdG.X53FXOTKl514KTkLhkjy.psIxsBjpGUIfQr1wTSmfLyMTFJEYGBI5JD7_0ygfAInwT9Xhy3spSng1.I6d27Bv9XmKBS2a_8D1jpAoNOzTfyV_iWWomJ7iW5wMlddMvlR7QonSYi3C2vieaMXJy9mfvUeg20ezFDBt5Pury1_vjnzJDEQF65LyrmgytZC5z_.sLTYs7SbcuTv4.QEeqUj7PWa0Q9gLfXTj_fLLd1_9htPkviWWZiUsbb3JnfEKNkEBZ3NtOSE60kzOXf5ZMSiv2uBWRIfHyYrtjTEsctttke0G_pNHfKqwrfoTaQYU2cybuVTuIIyDNPEQGhtHLiZjsqGoiyfDN0b7Y5b_crq036JnJh.r8GrYqBGeGdPTWhsFvOI1s5Wd2QaCrgUL6X4SbyMFH1HKehHuHH6dA8sTc"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91105b97dcfe6c71';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\/4270153986?__cf_chl_rt_tk=6K6WxQYp.QWO1MNiTa10fmRQnKdcFwuHBsmunRN3iSo-1739402935-1.0.1.1-ItIy10hvzFB_qRUN5j7BVLuxoWDqyUEEXHejBhNNSPg" + 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