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-aff5zfbrn.mit-edu.top/post/1078492563

  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-aff5zfbrn.mit-edu.top",cType: 'managed',cRay: '9110b997582fc950',cH: 'FXnUzD3aAElGnSIkEYHJPQ_8stnKDoHZRyalr5K8dzI-1739406785-1.2.1.1-xQ8yOWrrHI4h54TOzdfDJvNarksi5TuM.eaHyCX1FXJWieLBGh5c_.24dDMof1AH',cUPMDTk: "\/post\/1078492563?__cf_chl_tk=gvJDgnWoPDM33.rydsYpxNye93NY4Cd7UsleXUqxSoY-1739406785-1.0.1.1-wVzXIB.hLF_81eOcPcFQjFB5VxPSi02YVkfVQpNh6Dc",cFPWv: 'b',cITimeS: '1739406785',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/1078492563?__cf_chl_f_tk=gvJDgnWoPDM33.rydsYpxNye93NY4Cd7UsleXUqxSoY-1739406785-1.0.1.1-wVzXIB.hLF_81eOcPcFQjFB5VxPSi02YVkfVQpNh6Dc",md: "jN75P.5iyb_7i0aEquKIP8ZL0HXXBgMubVku0lVRy58-1739406785-1.2.1.1-9GlDyQy.dwCRjPuPl_28.lrszbTja7jh_ntpBtqP50H_jcIq7jghQj_ScpXwsyYZqlqj4Q.loF27fhgBMdQqMc8QMFAPWvbF1N88k_jLLLARHnj1Kmt7Kn2IdsItNSIKlRipi.PKpgEEhC4pA21fGrToVQgklr096NOh_xEF9v_K.EQYMshcXJU4c1mKbfOePSvGPzNJAVutMQ7WHO8rMmbQBmEC2wTQY2LBIV4ZqtVGlVS86yThRnTSqbybPaVTcheNYfYa7xArpTnHiPdQ4X.nIpFtqHp4p8NGF4jSvhp7yuzQAP2gRuM2jEQ.EaQRa76kEwZKOg8WkpYGhDbtU5g921t6j9vnMqNINFXYfLPTMIv_keT3B75RyilnnXl34XFdoDWmzoU0JigumWrhdqHvTyFaMntn.K_wqOFPK0XA8G6sf6pW2Qt2HX3HLKyKFHnkFKegz9kIH5Ed3F12dQMemL25DzL7eRTLhvOdsoWuFntfLXD.eP7B7DPsx130wkvpMsm5h5K.73PREk9.m.tGUb1RVhLJflZV.0WxjEcaeNqm6rjAaqXfV2RCnFNNFbKu_s9ySDfkKCMyA8yI5wHqRsaMMgUm.2DYlWcwcxjakTVq61tgd8VAKK6OPvT1aQ_YLR8.jBg2h40rbjxUkB9dU43I45l8m0TkAI.DgFlDjAmwYfPw8QyMLGBAjXp0muoEO5QY20ufjEju0CwxZJTcb8Mh_Qvkr2_fECO4ZG6wazS8S8PrQGX0rDcQkK7MQVhgA1s9e8DTiY63.jYC1Dhm6i0pGuyMDYRc.BpjA9k6QtYTIGBqAgbZL2OrKVBpc5avzdU.JZeHwntl.L2lLafhW0bov6R_mViHmEANlSMEgZ1Jftp4YcQqZozIn1XSo55o6P.HBQV5rwXg7QhQqcIEf5Xio12X6atHfK2yMIVn5NyWb5UWbWmRQHtVx4Gp8HGbPSC1XJSeSd_MGuQ2acSUC.uZ2zQXPahJT.c31wexTZ7F4rtKh1MveR3luAWdouvzZDjFkGpKkbAtCEZgX_eza3P5yx87Ji3QeAJ72daiekcaOZvifMgSK6V1LhxW3CKWOYjpsfEN2_IpYV61VmoWFdKsQzAixQAHIsMvmc5c37uNfh9w4TheVG9bGcRS4OvjDa0VyH3JcUtv6bzBmQDIzJ9JR3tBewD_6hsQ5RHenUj7DHGTFv7cMcuLRE8wfmhi4F7gNIugHdeiHFefiGILnDuGa5KLnYYlvyUn730RDazOV6AQuMb_zCeS7mAKQqf92WT9W2S3NrkKienTRU5EXsq6uTPSsG1f45u7S8iE8Q6JyMDSCJnzxhkc4ZqUvbu3R6wzWVIevW0bEwXUf5yVhPS2XxrPasoc1QictBPy9rMmKkepKKHmBL5kiGhzjZDWss6GOGQd1b_X0xFmw2o.PtBxNh.RO_viUXmuaZlq2x9p297IRwhWtreE65R_Xl6F2QjB.09.aMa2r_nOXdJ9GvYFY85f6fYfqSqFR12R32L0bLmYGQ40I5sgjO.XPrceV3xZD0WeRThs_3hCXp_CM3WP_L1hBXFcoIjkBWCLVfKGX3r2tUBLZRzlBbdyA3Ump4svLH.u0OtzpqPtw0hxI1lkkuLUxZDgUkpQ8sQi_1ULgrOmkeU7Mi.Bgn002ZyKkUY2tPIBWy5Mjpph7T4ELJj02IOu4Z.1OwYHx.I7g6uu5tX9qzSdIec1Hh6yHA5hLjCEw6YqKrEbWiHcW1CJWT3D9Y66kdB4co1CTZZecF.EO4Ik1TvItQBXe3eH2sJETGfLy2mxkbcX2vt7W4N0DCzXreuoGqlmmKxJR_PbAkigaRODwjGZbhwcl.EwfbnFJX.PwwiY51wMW8l9E.mY1N_lZTj0MVSp1DmoIGKofWmkUosKCDppaOpaAZHPsb_w82c8s.thbiwyzpj87n68muyq.NrHPeUstMyBpE2B8eWgoznQy.81NIJKJ8rGB69PZZhC.r45ZlHSWCZ26WTpcZxn71beuElZgTUjHzBMSigfpeX8iK6yxMLDtcdExxtLfKe1Hxz05txOm1.UnUl8zoqecXhvGcIv3uhDyE3js2mB1Ab0WJj5F3N6nN5GqviyrcWOR195U9njWgXqA7uNYEn1DdgFEdAmDqDY3ohzEhw_yPN0pOnOXOAgmYagAzgO4l0GlVKDQVGg.1bVQduV2zx1kBdqiTt4O_Uc3_li547G0C3S7W0NJHUSj72D",mdrd: "brDwt7p1g4WEnzEY3eGzH7UlKl2lOSK4jY5JpQ9lm40-1739406785-1.2.1.1-3NCDlrGRwJ0y0Py6uYryy4x6EchpOoBagkpSwDO4DaHnjNVWG10WSemvHH2SpuMpkZO4l5onFHoOUfgs8.OSzdyroHKFTiv5mruD3iezeBZp_VdMxCdB3cjEUVXFAW46tBKJ.Uh9uFDIez92GcnTVtB9JN2xFNFT_2LeVP_W8z_Rl8HnIVaUiYLgXoWpE6UO.0qhtmNXkBc4vSNokZx3HcJV0r.hKZ.CC8TwDgBE5InkrYfIZC0.dFBlyXJwNxkxJOlrrKtc273qY.GMNIZ0wQl9b1HzZv9j_uOiFmlcERvHJGFxglUqLhJgyhi66iHKNHVAv26KvjbwU1B8Ifx6M6hOFcJXrm4m66Lvm0VXc.BroNMsyb_pqvAEJKsPaH9q5dKIzkAbcESOIqEHDfR2tjpSQEBwvNvWV0X6Tb.PVFbvlM1773zbKbNHH6OLwNmJul1IO6ieJ_lKt7bsks.MF1Bcuv1P_.EQNTmkhdTpoC02Z8W3gvfA2eOrMxxT8PmBkYocHjHCilhcmne4iWXozpUtw1BMEIDEdpIzBmt9xjAwlo1UJX87gCBW83dw_RE11tZzAdXSVQfDc1snaH_8fUHeHDqPyjQqV4xA82sDqpHwARICupmQ1_8eZ1nS4X_7rVBzQwbLLJWeqGCHv9AlkJvf8D48tYhOFvm0Y5VLLhKzT2PeG.z4k58ppRfyWodzM5bHBoRcQCkJdHDSRGUwZmaGzRBCYLpUGLana5MLor2ENVImjnyyxLofOZpgAL48U0SZB6nOPMdSes3J.88Dt2fcEO5yKfCjN2FW7dzbf2zNUzi2daCMj95ias2t3Jg6vrEuRvfB37JllxmmQjczG5V3HtzZEcbrTPnDK0tRJZ7juY4R9od5wsaBj2P1qYOuu3OKqd4DW0Xg6y4ONpldsb0r1DPIYgk_vN1eKZE_9TCH.VFImrCQKmyj7tutAjwrullvmT5n.TI7Ykw2EDtI8wMtKBgLKzcAcma.6t2IOQhj1dcr1YghKStoxsZIjEu2OLilf4WsevfOJyYG9w9jynGzPXDtXDY8kMWCXWbj.nKno4HyQjBpr6LOWUsTInI28TMd7fP6uKg.qrq2yALcnfc2.RtSkO4QIy6gKsm3p5t4Cu01UDDSWErVcPndGz4OAwid36lt27vpG6G__A7HYy.ftM0kzbgOI_e.R.jgERNTCd04KLgW7AVgHxWD0l42DZgM5msqnrZbASpGM1dR0Mn3SdgG6Da4fKjvwQn3ixZ76H35rJNqoeJofEQHdmQ6xXBhfyCBhug2y7R5cdMFc.Gl4q0RvlWwZFUxX1URVcHWoqqNd_aV6mL.TMPqo9S4uFoWTjSwddTELfjIxFrOjvgCVzZlefqxdnurfIy6eAJOQSy_z2yiv8.fQRsJQgChNSPNJrOb3KFayPV4gL6xDW6.1Sown37oUPEtFRK.kTMvUcFE6QT8hI.H_dQ8Cut6lik9csL43E2Q7XPZwwOdVdbTcnKhHwWuzL6Jkm8sEKcuISqsKQEaubBmERBDeZIxXZvI63_Z2TLff54btmrh0WZfIeIR5ESBRszu8rvd0.N.dcls1ULITXSY2zT4KlYi5U8z3UB0lRyb7KkEJWFhxH45cSxGr_RcKtok2Hseq_yvzbRoHlhjv3WQk483bPgu3tcbw09kSns1gdQzX0JM45rOVC6oKPCnfFDAUvAGZcUBXqkwBiwac.rqYAzCP82pNRcJ8ctvpshjXqucGRsOouEk2JCmON3FeCX5F9tOfOCxsprm1vxoaqsZ.Rd3BaZHpEkVEqJk2Qmfcwebd.IMjA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9110b997582fc950';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\/1078492563?__cf_chl_rt_tk=gvJDgnWoPDM33.rydsYpxNye93NY4Cd7UsleXUqxSoY-1739406785-1.0.1.1-wVzXIB.hLF_81eOcPcFQjFB5VxPSi02YVkfVQpNh6Dc" + 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