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-aff9acw2x.mit-edu.top/post/6285093417

  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-aff9acw2x.mit-edu.top",cType: 'managed',cRay: '90fb2d58df81d639',cH: 'YpThFRTbQ7keDGOLe3yeUWo2XlJBW55NQvqXpdh4E7A-1739180839-1.2.1.1-Dc.WECfNEacV.zeWfuk.w5T_t8ChlWmRxeI.Z2bb0cuAzegFYz2v7H8atdeiaMFu',cUPMDTk: "\/post\/6285093417?__cf_chl_tk=DU_5p_Qok8hX5Oj9bSbHiwuh3WUUlGMl4XQi5UrrxUI-1739180839-1.0.1.1-Ba2f.3ipyj1qeJHJY4yXF4fkczBjsApz7kpKCJLtwjg",cFPWv: 'g',cITimeS: '1739180839',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/6285093417?__cf_chl_f_tk=DU_5p_Qok8hX5Oj9bSbHiwuh3WUUlGMl4XQi5UrrxUI-1739180839-1.0.1.1-Ba2f.3ipyj1qeJHJY4yXF4fkczBjsApz7kpKCJLtwjg",md: "sO4PDy4ZkxnSShy0LqJLr72vPDEJ6y_Sn_Arc9MuNtA-1739180839-1.2.1.1-c4JWBed99apxhBbfraOkf7ZHEqyCBe_YIUiWJA8J4mGvlhf1zT0Mt9GUlpt5sfp3.FCzgwSVjaNMuyB1QO3ZXLwlOmuh0.tDDzEmuGoMaNaKmDPXIkFe727YvNKLzIrVZNzurMx0LmQu92YyZDTXHxle4D_BMOifGs9UmM2eWZJzK.ke1IoMXXzOOLcYs0EfRBYIspLdjop5WFK6dLKQ4TbYp84IlCRUp6IdH5hO9QXI0XFsNeL_wNK23LvD2uyBOocN21IiPjYKXgQ_Nnl0_lnPWQKCuA_nS0jiffqgHUUaWoGU2Dv2drrLEOQp1mpMWqaRXC9XuEUo6NnE_8zDhTzeNzmV7nnButXrx00davsrhC1eldUi1IKe1cBElG1NtnFGV7mNTvL96p5Avn6vo1gNWOsLlEspV68UJGSCsbUrG5VaG7dopPSQm9DXFNMyrfbeo6foJ1p6nrry0kukekChgXnC.rbSZmRkMYStnekoW5BiUhmA8i9dLeLX5t4vj0cX6QPO9oP2AA3fJ63lOKvpeoP8mnjl3GgHLendIMrwwnluircGctTDL7OBTcE4oQ6jgQPjaCK244_bJaGa7hGEzhWCzgt5On.EEyTtqSfUBxvoPyrakOXfWIqYohVGj60pgsklINrHp4FnB9DA3UUCdEazpmj8w4QqNHOuokUIXxkUjBfyAxnxSVeiImPwHy7iZ76mAlgzmdNZCqyHNyhADCkeKrqpyqnEFG6j1Z2p6EiohiwND582S65Hl7ng6zBWqfDRR0yFX27diORDOu1rZTKBY_JYK3osATweKQihWeD_aGnO3YHmrzbjPncX2EzdZkE82jk9YU9ilMzACPePtvKBPq1SU2d0Sfu_IjC6gClgEdOeRdRGqlOIE4uFHfhdVozv.XcIR8maHEoO8rqlf.aZTomeJ0vfYwDT9mwgxTokollD8ndd7ujPwOwZsCR5FrjMDgan_Yb0JSvX8bsRi1XqjSkSXlWAXmgJcPfzqqWqb5dG.lfJWf24zEZHeLV6PK2anxZ79NOl7dL_uP91Otg59PZ6mfVBmO.C1x733Hq1.ecZ1khkdtjh8TYtMPNjqRsUbtQK9atVwj6P.X1eM9e8f4MX6aAmBITm6W2QG3qOTJZN2jjDoRIvXVNtyJip..FothuNvfQL3Rg0eTd59J6mQl9yaGQp3.zgY5_c6IcoDqJbEJTd0bZJ0HkTxUwqSfWG0uFXH1DsMuqVlLHC9JPBr74X0RZdZluHfsnM583Qt1WpxPsYTfCl4O6QKvujujW_q4E50f2DaERqC86yN3uvAmCEiq1qfrTCF5wNoDm02e2LJKnGQJuwpCURrvxQ6SspEudKivwH.vIT9pXJw4z17w1APyT77iw1KremExGAYcUM0xj4Ue1UUlM2pQfLD7vAlbQxIkD843VKsOCFrq2B2TNM6XGnb79taZerNCHHGPYtQBePMlhqbrqlGgsoFvwwXQVgqaVDURgn4PGcaHPOsW3Xw12VzY7Il1sQFOeMpo4ewagUUgjSV6ck7AqDUzjzg5a4sJq6cb6Gn9OTWt7z407otPHL7K5fQuQBfJ8bnhwhTxznt0KtZY19Vw0.qtvki4JTV71ogIoxW08xzAck923IdfpLyvo5bQ9EBOGNoptWDYLX8kG4pdXjqNR8f5ooKUCbCH.0lfJ60e0g.7IILgfWpO75HiElgNXbWkoldMYQEcU6CKmaDIR2KMcWM.1g.dc36U7Ad0X9bFeYsaVAndXzrbNL9htnZZYduHvkeINA20cA06VPGtsVLIzP.i3qK0FD7O7VHxCornIxsoyu6NaJlQVp51cNxRyiG4cdCQI6gT8qbPzI9U7XLktjcpKEat13y_PBlq.rXfDrTVtHmhwUQJmIPcsX.Aj1t4SWAxuOPTuGBfT3gI4cIeDOCZA4pbRONHy0VVDjIJoAJr57YzGQr5aZit755PyWxmK168kCKh9yRz9rHoNytBiQXvGqvrQKVG_EA9pUHK6.kBru84Os.2X2ZQKge.x4RY.hxz7.rq46.yeIwPn3ueggReBEqKd7_3p30zg8KfdWlsVjTWYBc015r7NsDgUC8vqde86Aq5QNRGU53ex8x3XRBEA00wCUf0EeE5i3RkRdXF5KFcfc81cgGzJFhK487E6LjZCUH973gjd1jx79EIDGSmiCR7YgXnMrc3wPvzSOkbMFLPlPbhE4WrJNxTwSwqda2uPsEoqiemqiCcGz",mdrd: "EMBbBmUqirxbIICzxNzUt2TLjsfZsQQSc1kdnZC7yWw-1739180839-1.2.1.1-D.d5S70VU.FL4LFn3ernsYX6GpHlEt3I9L2WOj3vlq9PPuuXA2DE5xwAIZMV4u0bhAqPYaeNrpnuTZe07ho2UsWEhc2NjlnTnjp0Jk73VXN4vXE1AXzY.Hmy7uDb4ld4yeQ7.NkMxEhSXxCb2qYhy09DTYiISCFLia8ci90G8jMvWbaXcCQXW92zQmIHfgowYKn9jBeWXFs0UX6iPFBkZzm6dPacqCNmB26SbNZqfc_UBwyV50YpwJJEsUbus4aKM7ygsF6d3FKecilZU1.HQQbO281oaSFDDI9v.lj.6Kzfrfg3g9TlyzXo93IRmuuu.rnGgSwVSmyz6MrjSvpF2NrScauLNmgfyhfmJqD_4GbwUBjBa77d76TMfUjbmkbclakyDl9WSK0jyTSHCW_u4mGlMr_oAPyM3LypyH8Ow6ap42i_a7RlQYm2TRXFND1eo7fiLufKIbpHGFptr3pI2QAvPxdLZIQX7QsWwV2b2iDg27esQTZvkTy80DBRgLQ7UDDgjtpO1nn0OTHI.PmXlqGoch0kNsrgqPLxXIUTEMuO90hcM5k5Rt9Uzwz203krdzv.4Q8gl9lST40BqNazvpYZwYVh6XgZeyka56OaX_yUce6m0eeJvjnn1dbxzPsegiD6rHQcLkt6KGCtl7Q9nUzXpJpvUb1vKUsJ.rGqJ5bpEngCosqbIzsJOCtoksCOz1Q1MgiTZb6l3DWJWIE2jGhIoOXGO.fOb3o.efsNPmHit9ukAAZeqXh19u1y35jGW0VApsEaCU5AWXIKPe5o7llYep51yYWDM3F3LU5LVMpLj0BvFe9uMeJ1UppqIIu3suuxYOS_69vTAh2fZlVUpe15jTOVEb514ucCuizQ_h.LL8uTUW3afue541YYPSbfHF4EEY3v7FYURPO9nUhjzT5cQqM9EjnrrqcBLvCRwiTSXNCn9nON7V3f62vJy5mpCrPO_A5emmekpb18h7SLiw9q78F41yMspDx1r67cVneIVnY_BNPFCqlIOH5AnNd.IPWezmkMH3VOWZ8YX44eyMG3kZIM6biNg7.Dg.I7iSRPidIVFAntkpo4IurBqU8qJjIWVCD7lgK.z3mL8G6C936gJlExnpR1Q5g0J3ph3Nl8.uLR.DT32eaYXCsoI2pHMzAnRCLE857ht0py2kIWNTpGbs4o184Hw0IOg1WVxmD_OzOUVNhQwmbVBrn.Rht6gNfK4NbOl1w_PmFbIdidH3ZZdIq.d4bp9T8xBB83SQxtculjgq2oh_3Jff_N9UQlPPNdlgqh1cPFsAtQk3JaEWQHVYFgGJx14VUiR54MZsL.8dSrZV49NMbVRpgjUtUWPmC5ZMstqw3xuLfh6j8lDvqNa8yfGryhbmr2K5s482mIzh_K_lEgEFHnI4vheTdcTXi_W78HMKetUThPUjErh25SwIRwVPwP8NSwsleP5uYjHcJXjqnEHpsrf3k69bzUc63RsF.UbLXiV5XRPMmSoUkKNqYf0zXA6twMKq_xXEPLKCi5vHHRTpi8_7tQI60_glqvuCVhtD8e39nVETHSgRKkZ13iKq6zVgMat.2IsOmAqmN5kQOmzmvw7U_GonkZ8Tx8XLv.N5vS9wvgV9bd9.hk5UAjzYNWzRwMlRXHrcFmHo4NScyZnLjG7.4PFRljOctFe3pE1WlSZblS9Ow.3KRtJA6mURuOk5vu.DD69g8RJp4_8xOSy5NOn0X3GgIYpxSNdWsU7nHfceTnrqXnbJmo9FM.22KQskWg2NJCwW4qPbZINnHvi8nNkeXZoNYkwCbMJYtflHeis2DSk44JFA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fb2d58df81d639';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\/6285093417?__cf_chl_rt_tk=DU_5p_Qok8hX5Oj9bSbHiwuh3WUUlGMl4XQi5UrrxUI-1739180839-1.0.1.1-Ba2f.3ipyj1qeJHJY4yXF4fkczBjsApz7kpKCJLtwjg" + 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