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-aff93xi09.mit-edu.top/post/2160957843

  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-aff93xi09.mit-edu.top",cType: 'managed',cRay: '911055cce93a59eb',cH: '3RdKi5pu1bJlzkc_4xab8V7aaVgZEWtXtEMpG335N6U-1739402697-1.2.1.1-R2hXhJOf95sizqXVJP023.EqEMlxUvk7PzRpVOkvKT6QHYWZdM1v27dNjDYnBzIo',cUPMDTk: "\/post\/2160957843?__cf_chl_tk=MvYL0zr3MyDa665TW8.ibVvXHz27PyiCRARvUuUCdoY-1739402697-1.0.1.1-9SgojtihyYXpoILqZWUDk02PWYIAntGu6QLwMUFHVsQ",cFPWv: 'b',cITimeS: '1739402697',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/2160957843?__cf_chl_f_tk=MvYL0zr3MyDa665TW8.ibVvXHz27PyiCRARvUuUCdoY-1739402697-1.0.1.1-9SgojtihyYXpoILqZWUDk02PWYIAntGu6QLwMUFHVsQ",md: "ADckA6EjYckD8UEf4tiR8dyXiVFYVuQbpR_Ve9OI0fY-1739402697-1.2.1.1-R_NBBiWBjHwNvPMuqD2VfrlwwiKv3jgApI6FAGy8m1kRJ6iHH6DoT6WIk.mqT2Al8eBgLwZgToOv3.ONVeF2TXqM8_GEsVGLjJmFJVDgBJt93lO0tCGRqBJqxD9uV9JP9g.y6bh3ardFTxjo13kWtiq8wwckanKDPdeHBgCZ.oiS_IyNBmE66GVaiCWemNz0TTuoF3djHDG2bYLzxmMitXLJDTB8tKfQQFPnCT0945xnk3byTs6u31izONiroJXuLGKDZwQzGOPQpBbwTDSbG7RaMg._9FiHpXa2n2H1Aa9.KS6PnMGYXz8o7Ml2WG8vF2oNYGtyLODT3OoDhdcdLh5BcLYQIgh3VFkzyKZO3iVWBHivGUVkfxCyUBKX2wnB87YsJEZS4ZNQl4mffbcIrb8RdAhmBdum5YOUw5Lk7fojg4lG61BtTlf7fScjSxAR5zldELpW_Mkuy69nYmv7OB7bJh0kFywuK9mMWZaYY9Pjk4s5GkCCIdSMff198SydS_N43wSkprSlsRljReROKSkmSBU4qf7sAqfiwiP3SUdV2LIGAZj5Knx.NbIjdI_UGnqL9O1POBSRuJ_j25eb36WYwazlZxEE2VV3RIXj7983Cj4PiSUSaRbfkf225xJUhp94eZQNnZZapizEraJixZpMgWXbTWJUc6ClnjtBBZzY.2JfrJbHhsujAPPu2srtNGEHr_rm2PZIy7W.1JxXdTZoyKPU7tB61EJirazVMe9Mg45_VwzYh69wujlgTQwXvJERVSA5T1p6je2.mP0Ky2U6TSihsdJjYunDXTXwf3bO8SPEqMubcexfAsjoOP_nJCYM2W3YM5Jd9YVsawuDHmktsmLOIANLYKEhtNr.4f42NEkXV3N1x34j0XAqXhZ_EdsasJBqHg8yEODdIkXVAHL36cQ8IymdYflUowUztFUAEklYf_l5vx6r9uwUd7dGb0KOsGvhq7YMBoRMNSbHDMBUCPy9ftCqZA2Nisv1JJWzsmvxGiTLA4iQ5BtVvtSv_fhXS.Zok.Ek8Ioa.hYf8v32Vx1vdC_m6gaSGFmoj0Go9vUczVq69aMUzHb44knd_nbskKYVMXA3Y5vwSOfVTl_PQF3Wkl4BYWcixpxTxH4nI_HUk0LIDh2Hwv_LmgOsxoHBtuK1ZlB0JYwhmk5JPFIsfHv6ZCEhj.gqLQoLc44BQUZ7XecCWTTj46mGmLwUU8NgyUeHTFA.I9pn9T55t1CA995lROi0tPWZdE3SV.OD1iwerso7PoFidRhdSGlX.EanoMPHpksAkc_cxelD5mo0TB0GDqD0mxQs47iBhhC_5l1gdunyVf_6P6JvPo4ncJ8Z8ePDKunrWEWKfgeY4fUtxILheU7ajHcQNB.cHcibhyCyiyhP5.jeKw53FcleL9Z6key8XG1M0teFJBMvecPb8V7VtPP8jkipgYnFpwYS37_0pNRAwqV4z8q5MJU6ESabsugyVkbhYwzX0k29d9H5C7elCW1Dns2_B5kpKIVrNUO3Xjkv40WGlJ.sJ6Dyw7nmCt2.nXQB0DAxfiIvsfdivQKkxENY3n333fyZq_FmKrzR4vdgJTYO107056gNUFMyGjS3rGkC6I0.tWcfc9PfyWNoCDsiEQncPUivyp80uKsomT8z1mzxaNkLL8PIpe8bDxJL2AXWUZym_a.4R6oIlVp2SRLHTSH6.Kt_V5XAg4W_bZdyvH8yFb6CT0rI.Kv8FKeyv7Qqjk1aKNb0tGIi57BocbZLLQGNcPjlCvaarz9QV7D2qRtr4bAymbtIN5hekOo9OZTVv5DQLW6HElPcMyUIyETmgXdOMpJjr.HQNtAztbDXANccDfLN.HMcT5stvCwVqroui_wFVtmGUiqckOLPFFxySqkBoh87qyj2_3O2vc9SE5qs4xWS6crtjNw3OVkerRFnZCD2gL1E_eVJTLEXrxtw0_QdmDUZrUkXyHOWBaJPWugGXEh2lkh.lTAaer2ybV5Pfn8TUw3dqedocf5ueiiFTuhnJJhEHS9lo6bYYXBmslg4ISCuHRQlYvVcAeQx5ynpHlgYKnkDVfE0pHptdMkd3YrFYS9WKT0Pf3EnF32b20itZBsSZXc5kDXIpNpSEZ9g1qq5iZLS157GCbDtUM1fyleTH.sgSc1bakuyUEW8bfsrkMhbATQkAJ9TXlLW9YtRqv5gdgKwxlNXBpi65K49I_tMVdW4thdV0kVs_a67QUss6SVEhVzs",mdrd: ".As0LDvM7SLdZZNlIPaje.Uh7u7eT.pfjngiH0ZSHlE-1739402697-1.2.1.1-StsbsdLnyXpgUe3hKJHfUuzWSsBJncEdCV7CNVmLq4_RDhaRvhbcQ8E.GoEuu.0.Ge_3qBqcjMijQBTX3MIXAlT2arFiQUCrp.UTOm4ROC2OCoIJS9u0su4QGni9A3Y0ONnNU3UslkFRIL8zTaPK_ewmR1rIKHK_tYoakBBkyT1vrQ.q_P2t59Z0p3GhPsV.WTwxdR1ZT.hdzsk4nTojRbFoYmDha1syDnJBPhi9AGeKmQiQgIw8Z42NytL4tavizv0g8QJCUkg1BECREpfkGBznYg6nhRipxGNxkZ0xNJlO8gLI8.6A1uIgy74QrMW3.nubCWUIqYsiqnfTvw7W7zkW_98V.djtSvgUItY98GQgbLZ8QI.XXrB0WdnpmSQdidRoBfgHsluNEnK.x0jWTjABoPLHLw3TRAbEUlsZJZz8kwq3vVWojszSlHW5XfqZjgKT86QLbFqOSqeQ5UJ6Hez1McfqcQH5Ma2kMVirRi_Y29ixFzfAab4ec48OcwU6wkIt4AX6AQ6e0pMQFdkYE3MrNQws8uu8IWBQbV3eWBWIwPamjy2lsGjDZal0hDnfBCJwnAcqElfehXBvhzd5qNVpJoAAocm6peH3.jEmgGU1.DVVH15DxbHffHDgBI4yz59tddVyCsybN51.lTFhskDm3aNWiK9H5DgUxiX98z2KBwEPO4q2pOZ1mdGtVwEGcQ5TtuY2mkAGSvVJWSbyu.vojKbIHttDSDiWhaNMCEmGDxOCOt0U7wcSzDYQJagNGSqlt8sdqutW4BMcVqUkv1XLrdOUkolIt9okPblEXZHVsSJ7kn6ikFr1fSycB1Lan0.NQkdCA3JnMV01Tam9husYvRZQOMwNbgmRFXFDuGTkN0pkFaQV8HHhZuyu2a9YuhqDN3wyqEejhpGHVUJmgeUB.UVpw8y5ilzPRJApzfSgCpsCcbw2Hm1L9xsfxG25efEeIG34bRK8LeQUrNHhl9XYfACblpIf9ihQd4oaCLWU3tBCoIapFZMscA0pM7Lh9NZMjKIkhlGdiagMh0n4GfLQQ1.Yhpqakrm80N7_iEvQqdYgxH9NJEEezQlvVsS7m_mct78k0br2.8jOrhGJYdu_zu4AGUP_0kaNoFJ1vIUpZICHoZ2tgaDjRKstCC4gYJwSoeoFMfRFGzfvMg2MWtwotPKWuPa4zPioe4qK4SaTo9rXFpIAzVSK3ju0eZXuz..3zVxdxqCMBFZsXMXhQH93Dlx0moy4ysY1.Km14U1FfrWSvwjxBS_TgRnn_ur40MU40YWoVz5XFHOFeH1kZN98lZsOddDvh3yFvqwL70OQD2MNQExDvUTRK4EPF1MjPyxUNYH.nDVSSeBv9mCI2ykQyq9RdyHS.UTz2VW.sK2neJndP8M0DAlM_kA7niKMXM3D0J43sTVdy8ea1Wzp3q40nWI1qixykGIpqqoXauTmUvmhH_PvOC2lNtv771IaUh8oj1VWNtqv.7GNl5ikJKhtlF_ZICk2uikX69KL2CfmhTX2_yauFA2wyqCoRrrOPT.XsiodeV09cjJAE534vherN33QmliTJjMtXKKPYI73VCtxeUCcd8Y80_yqMxcNfFFUHnfUW3afKJ1BVK_HwXVNeDpNdJpkxo8Z.W87m9tUlxm2lXInesD5eTxvDvIs12KYteXhKVGPH._0VY_9kHk.1z7rUIXqmIKJeoN7j5hDgBUqBd08oo.hF4W30SqOlcFQ89FpTGYY.DxC8kNGZo_ERQ2hcr1TbYedllT01dh91EilI.z.sASUaUk681lo8Z4eMga9Wk10aJhfD7HsBw"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=911055cce93a59eb';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\/2160957843?__cf_chl_rt_tk=MvYL0zr3MyDa665TW8.ibVvXHz27PyiCRARvUuUCdoY-1739402697-1.0.1.1-9SgojtihyYXpoILqZWUDk02PWYIAntGu6QLwMUFHVsQ" + 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