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-affb94zem.mit-edu.top/post/4369852107

  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-affb94zem.mit-edu.top",cType: 'managed',cRay: '90f49b4aafea3b7d',cH: 'oFOm05_evLP2feWIbBa.sI11.kx5n3HelXLi5dCSRo8-1739111942-1.2.1.1-5nS8QGfEBFJfKrWGD9RhFfI1R3G5EhOFwTVhNJBDPDjK75PptJZnJI0WWPTwTwCp',cUPMDTk: "\/post\/4369852107?__cf_chl_tk=PEtP1BWCOTX3Ze8BEZLIVxKcUvR4JFHiphVeEyC8CMw-1739111942-1.0.1.1-sGCIGI1bf3vR5WrekGJrXmcLKBDUjG1EsTqWTDMaxhM",cFPWv: 'g',cITimeS: '1739111942',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/4369852107?__cf_chl_f_tk=PEtP1BWCOTX3Ze8BEZLIVxKcUvR4JFHiphVeEyC8CMw-1739111942-1.0.1.1-sGCIGI1bf3vR5WrekGJrXmcLKBDUjG1EsTqWTDMaxhM",md: "AwviepqJs9BNEYXzenPIOBGHN1NMP8wwKugmhORalbc-1739111942-1.2.1.1-rmdhjuDWWkauX5KFUQ2FRZaHm5BMC9u82GLledlIVXMKTwyeW0ARVXm.jMC7Q4v24R_H42KlF9CzAESszpfuwnon31wX5siWpyQ7ZBVfSH2LXG_E3d.WMkUmTJRtoNvowZ8e7cfzC6M4rYP9yvZ146nRU8UzxEYt4EvVZRX9bALKTuAQN.PuJtkdD.BfvOwT.LGCx6oxSCYpUglytYcNseac7o3HSAhHS1qlyD0_l.pPnpxT1pZo4bbK4J8Qr1q0IiIFUMJoCrPROt9BAEivetHkQo59crJFZsT1viwXkVJWabmZo6n2Ih9ZD5C7iVsqUc14BaK9FwOb.Qfpgnr_eDGW_9KArPZPjszpCDS5QxG1hIKMOxuZ0.waqGKYZ5cv2ndHPaAxHvzOzaPJyMO4h8j8NkAFTFmYqG6sLpQwgyhpDPhHUsZfTyoBmLRcRR5do5MdEN7y.FJVJ1CIbuwAlww_uG5gHlS.Z66PriGYfWKkkxeKP9mq9EhLcb432SyBPys2wbkpX72RTHAm6r6VHvmqxrSBIk5wWTw0SizctXUqPpEKjHUheIOrlCyGl85ofd67hOA9vN8mXv5zC_B1tKACQ5wT17rdABJJvHtAHQchPmKhMT0V80_PmeDyWauP5A7GsuI34xHi1XHER4T7PvT8KUeYTClznQ1VszVeV.PDjn.yfIkO6pxAn88_yT2C3xQXsszlbCY3t4l7A10INojApGXxxdoR2TKdaAhfVExf3UPH8xcpSyZ4nGlO9Nhu1YIIdZIJNh4muDm..KZcqUCncNM2lQBr0lWeUz38m117Kwpt9Dq9OKvCWgClleE8ufFpQbghZSVSfiv3LHimXq7rvpQEq5YRHic7xB4_bsxUDS6cslSle4SAqahWQMXFyOkDW4dImKjlFk6hn5NJicCneYMRH4D22QzRg90E8AowhGNO3_uAVdgfGwvWkKuBfVGi32QrXWRkfEBXi3P4q8qa9kWCLakmoK0BxqZ7DplA2vds.EoSEWCXGQaHOER0.nOMGx8vSMYAt26PEyL08i94kLijh7yZV54biMCJ4fF6TgJDeegNXj_cCTgLF0vyIea3P9oM8rmt_KHB3pVX7EYMlHfrtSh3w.rmhvis4h5JdWQRQRYrfk73YRNT1BNbPDciBKIjHB1zz.u71qrwbNUOm9otH9nE.Ckk3WKOof8EN4ioqF8rg.z62L8RqJ8Ie_k0Eej_jC5mXzfh5k3Fw9tiyPggrKhy9VDvFRkjyN0wK1v9A1PjgAi3BNYzTwT.Kd6cQl8un8ikGmSEngyvCg4iitWg3MPZIx1_9zBwl8_MNcxOklFabg.KSqbFsGC64nr9njpRDfc0hjPVjIWdwcrnDPi31GHvnwfmEFZlQ0e_9Ezwye8tBLrV2yzhW2T4KYWvGJHeSO.WcjMfbn.HRTY_OFvH7aIbDH1kiL6eBb0GGITqpuHw3U26cMoGEENddBcxqvOTPjto8coHf13pI9LAiYIBAXN5EV1lU.44YeZ.vFUYJ8gQ5kh_szeUoCA6vMc39Gd4NvdLc5rvDeQLFM7SYqM7nO2Kkw1wZyMCPFFE462i6zIMstJGno8TVL0B9fC4RpkeYjWi7G6BS5Vo7cIOoCoGDIUaJMGApV2OLbJRjpod6JZZWnj.9poDD9s8bH1n7m2BMjydmHhnKmnOv57ChEpYLx4Z8F9XW9QcmKjFL_bMZW5w4BfakxPC._cLjO5KDhgiD0uI9tM6uZ49FSx3Nl914wBDyTSxG.y2h2SudWfDIikUru43fMr30zOyqq.CRp061N9hNHk3XPuWN6f2iuu69Reun6mt2MUxCWg1ycfKBdXfrhOQt3oRthrHslrv8QgO.uv5gt2ZoERmfZ_BBB3v.Lv.jNEqQnJq9vFsRFCFLLXj2p9M.wl73T0YiWNTVUQpHloOA56hAA3uMWKcO4A6T0sA9GyaEgeT1hUrD.rlQGnGNUgZY8Do5FP4p2qHhNQ4EnLNAE6lYrNnJZMUIZAVzDpyaK4.8KpPOwBFdTKjUZg9v5CzkNuBuKx0mCmi_B5Uw3fp0VPeqXGCNFq.d7r5I6GEhtlyfhI_x8ourK6n.gKT2eM6fPU4aTsK2Azr6mVxj4Pfq3PRfI_2ITEvXsLMi0FA.DjWscevJ6bR.vV0S5O1jWKUy_gRcHmh9u0kOK3kEdekkx1lc7pjgwSZzKlPLP2ttQrAqD1Rk7JQ1DFcmoTIFGWB9qiPlf3E",mdrd: "PAbZnbmAwrNDMwAlZDNLZb0_SPiyTCw2ifyTndJV6L0-1739111942-1.2.1.1-3wNlq5e66Az59vvZ1YbeoBTHXAphCp24yv14adMUr1wbsv1erMaG8oAejipyniWQ2J4VzEdghuaKCMAzBeK6NUkxFF0ozxCVzJhRwRjUNCHBKgjxcTHO9Jl3uTh5jh94o3eRxk.Xw7O_PC4fBX0FpHlrvFvHVwzTYX9yuPFQBMqqWJ_qoIPz7mSzfBvgb1F0_D246Zyk3HfaHjAVrCuAWj4RLAkMuABvUjzIdC015XLo56cxguZ3U1TzYaE6TENu_zMxQQNTe3SiGfGpe.5dt2UiNdYBasgpfZ_z3sr5k2P4cs2H.8KKNXoZirLx_D4BEcXW.znYohtfDxDOCdIAg9Hq805DG623nPn.9onVOFnrpFD15peAFHZFypX.LVt6DWH95h_zHkrssnJ7KjkbzaHRgqTxTfOflSrthkp8j3CekBY7V8a2oNz9DgsFXruUpyprbi9ot4OWqC65CCOPVPOl.99nbXK8IhqRKr1ilOb1a2Y9X1oW.uzQKkMHSaPLEIho1P1SJvd1QnqvbnBQHnTfIrerB0PWXywbAq0oaUmXRjyvXksmbXaK6f4mnXHEZy7K94hlzTmY9X0HaFpWS75KW5HDZaH0IwKrNTanxVSdFlVyzJyB_fIdhB2Zj7uxy3ZGN2jCwilT2MDOWsA6d.YrRd_F7UA2QrDsf1d9AVcdMJ2Up0w8sFevtSF9KI1Mqbpb45aB9T4k7JnH1G_LW9c3CKJywO7vQywYSB7gOt5q2TWhVrTnXDPXxrTL9aGjiffgkSUdr6BFjlx2GXKWYYQhOD6OD3evgE_aPlva2PaENSiJgoVON_hCPRMsfb7nUiTit7W_wTA1JphiejcjgaymFpZIvDgF93s5YZcTYuBhEUB8IfVd4xDHaEZ7slK6MXinc201h2bkWROh7dKLcPQSye7FpTTCcCJ1TjgqH5JO3HtBLm8eGQVpXvs840UlmscNMSKNl9bpJE4ebMl7nnGurkiOkoZ8VbN.oTNMubySEu01rsgU71WGk4umOJNNDOXOt8PEmevjns9zS_Vipk5CyfDgE.ATUDfMOXeeKNG8vsVv4RyhapokylitY5XUVwmeoOaaeSXIvkVDOpCtibHIPiQ_3_X.Q5b_BLZYd7PWaY4Wj7g1Jn5ff2PIC1SFGD9uguRJMURiqeENVJ1RtNPK.zY.PohbQToFlp.nCX2AA63ayZ3D23R6W1sK5Pz0QP9lEk6oKfzMu7j9KIKH5YgefO7dSk08JN1qcya7Mn342r474Hmnzbw7XHzEkJgbyaIJ2O6yQfFS5b27fBi30kQ0gYjNJUEHiLWZ21FZ42CP4mCTEr0QtaMplQigK_0H4RoekF6yXfYshjeurzfl0PPemb8YDaYfB0urooqi.aBzLFdN4r9.ckco4xhJZljMFO2TAz9bB4Ulg2pYo2LGU0mDUmTR8cMp8hY6.sCeTUkQHw_WYQaKOYAi96KQE_6f3PCtEIFqNMFIzOogNBj3vNq_Tzy9gzsnTSuQBeQcxXMHNEJ45J3cmtGIfr_UuEmBdJBIrhxLBvkCGeCkaUBIXMrDeQlsZNaDLgLZg8wUeuj6Sg4ZbtChnz7We73aGQyQEsu8BhPKDwu15VY2_PA8e0JNJij7DM_AJYjveg.uLoHJUEypAwIEipURb31MsUjUHO5YsPH5MjOGVkS6fTM_Aw68Fdgws80YN3PP1ZsF.rb8VMwDKJXYM2Xt08GRm2uYnrq7jQ0viMUAmhQ.AoTP1N9.02OMAITYw7aSEvqTbfhvuyL6_KxKOJ5jr1MUwOMoz7AvSzcCHO4B_P6JsHtd.MLr5hJIYki_tKn2cDyjcFs"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f49b4aafea3b7d';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\/4369852107?__cf_chl_rt_tk=PEtP1BWCOTX3Ze8BEZLIVxKcUvR4JFHiphVeEyC8CMw-1739111942-1.0.1.1-sGCIGI1bf3vR5WrekGJrXmcLKBDUjG1EsTqWTDMaxhM" + 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