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-aff13pmlg.mit-edu.top/post/5018937426

  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-aff13pmlg.mit-edu.top",cType: 'managed',cRay: '90f434c8ac4856b6',cH: 'F305jIvQMVTZaprLDyEfS5f5ofP6phUuwK7.AJXsd7I-1739107744-1.2.1.1-lPllElnvMi04eSJeoO5Wt7VCnK86Pn2s5UPHfWaEPzdqxm_GfRWL9wCO03EJgjKI',cUPMDTk: "\/post\/5018937426?__cf_chl_tk=sNFQno0jFOqiz2QU.x6m5J91NndaWLA2SbeFC2ZxbEU-1739107744-1.0.1.1-0_4cIIe5aiwDND7K0YYRNZdYUiIjld.LlUm02iRmCXU",cFPWv: 'g',cITimeS: '1739107744',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/5018937426?__cf_chl_f_tk=sNFQno0jFOqiz2QU.x6m5J91NndaWLA2SbeFC2ZxbEU-1739107744-1.0.1.1-0_4cIIe5aiwDND7K0YYRNZdYUiIjld.LlUm02iRmCXU",md: "th7b9Xfzgv_DPzgQr2TWbZnd463INE76vbz3kHBpx_I-1739107744-1.2.1.1-mFuR8b4cxA3sBBX8cRcIzBpaWFumiqo2WPro0bZTEBSsxF5VEQinckbzvjOBkmBDUTVnHAhyNbBQXG9E4g0uap8dyh7IO.Iu_LQZRszC8kh.LWDBn_FQ6xKSHWer8.j9eY60golBNAHsV8MAZh.A1TMC9GYEat02H8UiAlEEId6nx2UZTQ97ygCTOpvVWO1IIJXe2aOGaMjvMR_.6EQuvhoGd5as.h0Khe8MTxoqLH2IBkwgvXTKL2CTZtnTvfi7WhxKbOgD22q2vj8pWGrQ8Ep2O72RDn9YT9gglKDakAfaWCMjkRxP6hZBqrTbuTCqkfr89TeQhaZ.97mFQh7_.zu1ihXIibRDbIqZEZL.T0FypCKr36JLOkOBgckLmIDXpFjv2uwTlt2YvN6CIpDNGSxVmkdPnrotTfVzIdL69fOHGw4BkjX3QjWNAg0UqnEu.ZeGrdUR8bScJEyXu7AdamtN5qIirc1Zu8cbLPRGVUWwaMFcFbCrpgnmsbXMAKHgiOkRycxEb5TzM2sTWUpqd_ata8ZUBObLA0MQ7e_JQdgt5fdL3GRVxp9EvrFkWNNxJKwbuif1i7IcPXoIPheTDsjKomcKmE6cfUXMStMBPVKqzFJ1x6l0FLr8ZBm9LMpX0__4G44hiaiwvNeU5bUmduHuryKJ22g3Y9yanrXTDJiwvKQwcQvO6M0vq1a.MiGf2qM4Kp9YPdnHrrBGyMwNPDo4XWwm.se2nTk1qFI7iYRU7dBp3Jte5UmS9gNaVxQx0FHDj.PEX8eaq_ZKp5DfFCz4WW1z2G5nk3TaowE4t10h3hR_QsxBXWs82pqaxe4vlXDbdXyuA_.8J_spndASyLpv_Ol3p9eQmdKqrVp6oFvk03ujh0BPKLMfuWF6FVGiW_fToL43YK_Q0aIoPGllSAJHbTaQurL8rndoG87XkRpwAckUxPR9Z50pBAlgU3vSVRpws1RLPd_Nz9orPazjg4n3RuwUHYeZminOohjqm9K7n1RFOBmc0YIAOhpgzKXt6GNsjhYG5osPKOGzZC.NdGvn8f67QFRi8nL0jt__smQSRadaXFBssg8_usUPeGWbfUOVqo00ye5jA5rhDXqazL9wtNoDuQDeSAHl_KAYWXTgceCp9SU6SWymf.JlUEDvoVd.ZhONPKp3kxuof_zuQutW6CB8ijn_h8UJChOHxRliwwiS4bYIO1ziFj.gsIFgXoM8VsXePLSCJe4QnoHVzZZJfAqfQpk_SmkRA2vWSM8uU4eLXsbryZxtFAkD4otfg9nmW.pApk_RMFti4DopCE7f5NopKCB08GUl.scirFd7NNdgEsiZLCX8I2uUevm8_6dJoHE2pGICx9xbvj.Wjb.tG0V6fsJtHtjSVZOFudzDfl0pK6m8mvA.CISFiQLHhgf52LidvNmEOUp.migbH5SBqVQO31aN1ulHWZ7LzbVLE_plNRlc8ar8RbjA10MoCqZgcKBfWV.O8rQsATE.7.dxJFETJv5o9nf3QMKkHrOh0OnMTb13HrEETEOBblc5rJADyseW0g0vJoy1cauSDPGoVHhvoV0z5JzElBw5ObTqL7bJG2ksLVSsPk0fu01JuW30cBzviwg2KT34SxOKirhyCnzoE0mqC6JQdXyLptjgBulq5.QuIFkxqeydduljhRkC8tWmAnwk8dNNrhj2TGGo7ciWU1y3P3ViJ580OYwrQswEwUNPUT_PmczdRa.m2jZUPvEXr.JaicALFtPbPbTs_zaNBK_pnAd70tVnb2bxeHrgwo40CXD295nJXt0TuBbD8Cvup0jXtzHr4aCE1rJBiqOalwqIboeqNG.V.ORH8hrViRJHbE7MB5pz.TB0Vowq1RmPhP8K6Yt5jyGtFggHw.Rymgb1BIIdCAe8mfM.6WEbOla8DWbqZbKdQ.erIFDzzGbR8292IRTF8savY.LKUhcMKMbFgppaY3LRbzYliCFgG10lOlzmykyXjwyNzLqleRp71C9uBw6T2daOQ2pyTkP5lPlnR1f0wW8Tnu7YnEqiGcNXaALz7eY9HYszPNkgVP46ayZNSQrqbCstquPnCyGoyJzzm5ni_0eRSqDTDG_czyPvQtUWVRufDrHaF61sCvWfgBlipxYTyTMdel2zQOhrUo31AKx9av4pT1ml5d_OENN3MvM4rHsMpQZWOv992Aaqs0WRpOQFCkLlPq_SuuGZ2.JkB2KVMDJXFsgUNe0luz_wT7DtXRp8AqdV",mdrd: "udZWlX6_ceHIxVEKHHMEViTBbtedASjsmQt3wHLhwv0-1739107744-1.2.1.1-xfOEpZS0wD_NuuGZfXd67HDJG7qT4epcHWCfAQKKEvbsW_qc0CGxPccueQiLRT4JW8.BtmpDkAXs.UNrpaGq0h6MTvgpJrJcur6ghV7HcdngiHp42JkbNVbuteIW3fdZ1WAnHaGkABJ1P4SQsih4X9bIFy4JHbDOkcJeRAGbUkgrcD5v8sOq7tRauMRNV0FjgTlh84DPowZby0x9FIVD8t9Gb575MlbmprxAAWhgwWI6hMpRbO8MgesEN6Z1tcMuFYE6fdMUtZoSRtzLDby2wVtUX2wRd6UfVTNPxbHCwltwrQUt5amZbISqqqu6nHhPV4pKNa80209IuOExyAfNAmpi4F7S2qOCGmhQwLjIo1yIBXfgtl0.pugp3dGl7hpoMK19w2bMxImMaYUzTo3CFhGIb2VXWaNF.MVPRTQQuW0ZakhDzG85O.CFW5sPcvuAiooB1Vy7DWq952SngtOee75AN9OJTEy6dLkdeXTdyxBWxvaIscJkrYr853Id2EhUcgoFwednYqKKQKtveGLLUDXEQ0ZJnuBdoCJpcL0k2G2_yoPK8G4m6SWxwNniL9O6yBD2nGNDQfOaxW2tUmjAomBj2anBUDjMM1cFLEnljrfqPwL9ifMwcGk3NVPL4Vlx4ARKWSookSn8xCBg7Ag1VIPG.zLtulLVDFLtOkwUvbCCtRwyiVy2RchFmk8cm1K.Gu.yNVXPHy6rTc8oyJNRq6hLfvSNf9VfjMM2FgQTxKoGrZtrUaceOvemxCkos5FbXYhV9MZ4XWvojSotH___BYirjM9.pyRIerbGZ9ihSQR9TcyRAQxy3cUCgbdWuBuZssNVr1j2JWD3mNWdY9F4eFAH.zsUcjASYlf3dHyNadQH5d8g5vWpZtGCY5J8jRMt5y.AQ7PNDQgGo6jKBAsKZCbJYfRTpbGsgF0TNok7jBPGLW7eKj2V8jspLyWZU_Ig607C_5lCV8D_ZGZo74w5Z9f3wsAR3hlWxW8zY8Xc8nHjOY932ds_HmVh9n4NKK9m9Ia08RFtXo.8cj54DzHzr6xwtM.46owDLHu8WiyXR1LEMmbOtk6rvWh9nO5f2s1KLCWNfGOrUR0_.mbu70ocMi59O82BoL.F.uGmXxuJd8lRKnJMtG595c_9wKoqzR1vorU8d1sYZgZAxXxSnaCrU4.9eGuyqIk2ReybGYLhy4pu43Npzeh.s5Wi.3ZenvJWjzK_cVM19KPj1GD9KtEqKQFYEjtMhIysh_AeQt_E1wcCEQ_UP_UfoXx1OdoJOFBCVPFB8gv_Vg8oYRHD5bL9z.BikC8ZPR8BOj3hIHp6gHEtr89zyoGKz9UvUQMG6hALsa5st_derca.EoOn3PJTLbF.aA3CLn1bfXqVKe6Jq6uduUYccjoDdFWkjQJBRtp0Q4Bo3wHNH6le2GOZ4O5WKq.6.ZiBSKArt9VCCtd9qJk5h6tQlTcxy55yQJUdh_0RVs6UT.3ai19Goj4b4BTfiOOkNS77DLWUA5rIF0rnzghW32tZDO1FiiQZpC6E7gsRjrj_TR9bpDu7QNm8K9uv78ev4o3WbtJcs070NNha1PbqnCV_3F8qCtgbZKEwqOuf_.FZ2FbsfSO5hWlewzjbuwcio_l5ZUYI7uC6P5a8Zr.6vTVhQ7_Fbb4SmMdvWGHsmqXsesu5gu50FcOhojAy3usFu7a5KgTOwgtDiLVPSMDYL2ZLOATc0pHI5GKj4gTFj1NXy7y0XraIbkvdLzQIAoanZ.4pdvMwC88TTF5gMIKK3FRURtX7lDFza19Edx1WLmNrBN4RYUqFtaXtKrdad7atBMs1H_TosBgoPVkv2ZM"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f434c8ac4856b6';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\/5018937426?__cf_chl_rt_tk=sNFQno0jFOqiz2QU.x6m5J91NndaWLA2SbeFC2ZxbEU-1739107744-1.0.1.1-0_4cIIe5aiwDND7K0YYRNZdYUiIjld.LlUm02iRmCXU" + 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