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-041998006338.mit-edu.top/post/1589627403

  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-041998006338.mit-edu.top",cType: 'managed',cRay: '90f365ee29f3c5c4',cH: 'G_.SgT9ssw297G8g4zHADkdkUN82Zn6xkM4NYLJGpJ8-1739099271-1.2.1.1-45DbC9h_JZyQ4Lvfg6jqOYDh80SBy6EzPye2W3E_3Hg3m8deFRBbUS_0aPlmVRQc',cUPMDTk: "\/post\/1589627403?__cf_chl_tk=JtolRJXTNFRNYHEWVmuwvdG2bh4XLz0M7EsksUrA08Y-1739099271-1.0.1.1-GUsz.JEFJ6AGQguhS_A3NIMMMRNqOq5T1bsSOSTcMXI",cFPWv: 'g',cITimeS: '1739099271',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/1589627403?__cf_chl_f_tk=JtolRJXTNFRNYHEWVmuwvdG2bh4XLz0M7EsksUrA08Y-1739099271-1.0.1.1-GUsz.JEFJ6AGQguhS_A3NIMMMRNqOq5T1bsSOSTcMXI",md: "KVjMRYySbZoY4lQtSrdb2OoBBi_oyCEKnjqbPWe3L2c-1739099271-1.2.1.1-zTk6SUR_LdbdGqbEeYa0c50_Ja4_47fVbN4tj5Cg7I58xy3OCUsUu4UtzTRITVEqAfSJzn0WN0GXQgEpeLJBp5nZIcr7vDVdatD4L1v511kI6dp2XzcavZvA1FzZlou1NsPkhQ52VwRov3byiZKgldcjbwkWVctkcCByNOZ.yTkdRXvqin2QV5ilZ8pjRv2y7gZtG3CoRUrhz4xiarDt_6Q5moMxaHF5SL3q5bry.C4HY1sJRs858b..sfjez0Rr3R6fQt4l_QX7lvNFdo2M.gzR6tnuDF2YfLV55h3prLPgXS90m5tGTy.EO5Ayf_C.lFjFJCMC5Edp31YJoCBDlHKRdtux0tNS8XgJ8xEm8jN7WqUddTLs94fUtTcViVRTM1hl3NZ6Uhi8rAlvIderzZC3g4dfD6bOc2_LYBRihLQ.beNWNGSOQ1SCJhC3UMTZaZKs3fEUwlAMU6xv8iZHY9ziowdeL.1GNe9KE1zg7K_ElXdV.E1DEo8vjUHct.v_FfEiUkbz5orLh.JV8meTQXKe06UsuxoCtnIjkLdxGapzGYzQaYwa3pBn.Ha3p9loY_gI.uAe3mFUQvVTFSa1p.wzFSgIwGtd3PkEqctJ8eZuiUI8Lqgmok2q36de4BQnMF6Ti9FddJZ1FHzJ3xdqJmDLzjHhIA2BmOASCb8amPE4ALT5e52MTHwTiSXsAiLhizUX6FhIL5xFpFx.wiKSaBuY0XA_FbRRjcpSCSoQFzXCVSQyGTCsAJ3hgqyplN5JOIkUNR5d34lkeLwPkx4ecPb3LOtY1d6W0SZSZ8rowkHU.nJwSkz0X4EniwwwW7U.clKV88mFpOib6CFPU3JVuc2ic7AU5gc_cXr_4g9rYph4sAa_nT9OM8AeN6ARaFEDWwOc_ZclI7neMc4bi0a6QecmXeSqNnBzXDHcb45u4AT3vJYoCS_EYVPRagpINEwgpdyCA.9YS4fkSXAZ0DJk6eB1noPl7XQo.E7ZtLdn0uoWUuX7OnEqdwJZ_KeVrjYxP1RHAOLB2jzLo4oVOAq1Tf9ywP4gsVhrILuBmO3KNCQWhN9TO2HuII2tqFA9murzRRKCAv.TMY.nXwUqbLLjWsfYFLi.aO8eyw3F8RW4s40SukZn23RrQ0ysHcm5zzCnXqRaO9Pr3wY8GE5kzQWggKg3HIagdXrnpzPSRQuGmCKBPWBtPktZqnhPlLkfATkaP_dvUpqYAhZUD5FUOiHVaY4UdQy4iV9XFxXRGUC_F5xcPchO4w7nthjpPADSt.3uTLotn1pstpyqj_xQsnzXglRnt.KaI9vaSsNi16FjFN3cZNjvjBFrLhNOz2gfaAcNmwthhNTJz88LLQcT3hCJ8wO83ansTMWYNSHjBTMDLANr8a27Q8onvnxI0p7ehJC2joBkt2AysWaZIrHj4yTCxC_iTF6ZZ_Vbrm6SXRaiHT4Pd0ZdfsdUTLBH4gvoyQSNgYEbggjzUHp2O1x_LuMHiqiGgcO55vWwG5G4Efma7T.xuyrEoZ30tVgSv50sxoTDR9cONYg1Bg3s1bwEJY5eXarrhz2iGaJD00DUlpcUlNxpLOpQsx9qK8gqW0VeFXMO50o1TXnu7NqfqMVunRCYxSneO9rcImST60ref3Ofmj.w00xYvyedsgIiliOU6aGyaUO.DVOZFl0B5fg_Pa6rcmoFUFp1w95lVm213Q6TE3929KzQCXwFlbkOwIV4rdqUAb8AsipW1yuE3LiHbDlHXrkJskMZimlwGM_lnEcvisCXI_KMibtLzUz4rHR82Ke9bsy85bOsKfUp7I0yNWr_KnADjx8hSa9vNoeBH804.gmFPur6JYcEh5Cc0lTYmrLGdDCme8qCPK2W1Wz61tguEPoD5U38ziInUTWSjaQuEHU7xwh_BKQkUzIVXdcphY7wMDRgaN4k3rKTK23nz1Y18XFGIfW0rw4DCEYKdHpdbf020JtA_2Q4FrriKKVYyx55qOihrUpJm9GTFAbNvkJWrjFzlIaWH8bEz6gEi0OebeN2gBBbKWfumE9z08VDTBoYeF4O_4FeL71_hQpZuVQ7eVDS6QaGv5T1kwKfUz9toij09nGUksB8HFstoSru1v4.7mah3EdzUUWQb0Z5FvbWCoFmWvLaehGOLXdL_pcr8XCE4fjEJ2gEnGloVrP.MlOxKeWUHqnFWGcabRCezcfo4lQH_GQj53hLOIevKtTyMqdmdlBlnUg2t2A.4EUfKhbd",mdrd: "NuJM0rQICW8Vf3wn5nHFyBk6xSvwQ.We10tmsss9mMo-1739099271-1.2.1.1-sBcFYg7pySAPYW4ZHLnIQ1Ezz_wG7hczmuIykPepRzDdUy7v__JxRHcnhViZQxAaPMqIW4D9DlelFXCGWGgRL4ubarEXH62GR_eMbXK520nRzdWC62o9Jo4NZxSp.KeF2mEs3IqA1jD6ATz3dZyDQn.mjwXTivFy9SkoQioTxIpvluB3eZvmvgFbMJFQkEmtzFoR1ajDiHd8Y6DZtW4Nftm.a.K_VfmW3v_gcQj8el50_4KaWlHT.DezkXJRtmyQB.AqkcbA40.13IYBNB4r7fy51Vt_t6HmIksGl0cL4t0e4QYCifdxy1DUao3fOoAfuFt.jFMLsHH5ktt9hiYfzRgP5_cODk64G7CtckCOCArmWrvNJ.Uy.G8m8A75hG_cgJxGBvxyPTJWbTzNqIyAmiZ5chPQQMQ5RfyKKleZgvhGRDSYozLnvmHyczrd6bZkJpMYE5pSRDm7ag7DH.ShbQCU5QmrrFftnYhLoY56ie7VyA0YitGk4FVnG_6Ms0VsB4UIqlho_DuSTfzfLCkKSy9SCcQfgZDb3sYXQQz3xP7w5WcPNtOBwYwjMkYtklfAQ1eR5KO435KunoPReGBeqnM1fCEgugJh.u9kmBYGrS8NZO9.Uv7nJ.oQYSokR62r2rO723QeLbp0mAP8kUCCXbxN7FcqMBnplPZZs.KmMFcdKTq1zjtU4y9B8B7v2OtoH3JedBeGpIoM1US3gnJQKBZLxU4QeO4tDthHN4R4Ft1snJEnlT44AtTLX8rqQQ4._mv3Rm6feAPA9hWvk0rwh.Ddj1fhvAGUwsnAr0Zm2_dPyVsDjIC_MBvQbp_k67RwfHnyrCRVmvcQ5x9FM7CuzqM1Aqd6nkSEoHQ30zY7AwAbj9472SgJ38M5_6CYZf.WCRsQ5fqXfpcZPdKZZr1VhJakRfN6VM14_beCnR1Np9JTw2IjipDkA0TxNQnSbHe1W0VLPyzGitBe.v4bh5VYoMHApwgzbcmPdIMR3jsytY3l.McQqpXU_FjobuwDtdevGVEGNFO_8KyFMcFkEzpxkYx4EOrp8pENFlNCkRjfW7_ddtdzNO7CycJ9QdcxQEb0TUTLFu.8y2L1FYcj75aaipRPr2Sgg5e5toBB0pnAPvUWKb.qj9mad8EmdMeNmOWWn0L69CNa73C4Fwullkb7iKSQGtphv_kLXGVyD7BvVrRyQzgA73ZJNFwKrBb1hpJLKbe3nsKiSjKWM6p5JV50De2CKh1cX03sZGOmlme5g1NqMk5D62WMR.mawCTWZKay6FRjmUt4.2gIOrT98WTvuQeh0qYlmHBR_ZgvmMJ._U3w1O0PB39gGtEiUYmh_jyLEks.5WRpGDZl3ohoIEh_VvHHSbGy37wzaumjGiAEo.LJe6SK4n.0jd6SZ0pT8lzRCeDUZyYneKtadpBbO2JPtCN6RP9m.cv8KlyG1A4qSBx50DGD_MS7aURteNJdwdC5khbYOkrqxvdWTVKGbMQiKZLe21D2KHp0c3VtsJuiyABM0_.gDiHJLoaikaETsDBWVx44QfhgvJ1XBxEZtN3qMSBBlAE_CUsCcFZIrseiVcSISRWHYT1lgGlGP8QvDBhmuGy1N9tRdOADZKztE5KBDK3sr9pLJDh0Xz5idSCd5MjqQDjMwzT0Z4Px9HMAewuvFHB0mureXifjUTtF07p6_iXosBJpcn6CjmLy2sC8qRdqEP.xCm84pFmfZztH2.1Eor4LsF9i.EiT_UGsnjpveug0qW92T5yqFVLpdoQYDb7EsHj3MRKxyWPjrzhi3DM6.kS_ZvvSGFDmMNNmPuiGeVfeYYlQBtNWY57aSgmFfqk"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f365ee29f3c5c4';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\/1589627403?__cf_chl_rt_tk=JtolRJXTNFRNYHEWVmuwvdG2bh4XLz0M7EsksUrA08Y-1739099271-1.0.1.1-GUsz.JEFJ6AGQguhS_A3NIMMMRNqOq5T1bsSOSTcMXI" + 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