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-aff4khvd8.mit-edu.top/post/5863194720

  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-aff4khvd8.mit-edu.top",cType: 'managed',cRay: '911054bb6d05d6b9',cH: 'PGyKkaR7T47.2TBoODN0utySrG9N93Uq7l3QiI7ydtg-1739402653-1.2.1.1-jSMIIt0kG.m6Bu6w4EWzxMlg9yKphKysXmfEvldt.fG9HNcfk_3SdIQYZN1GI1qy',cUPMDTk: "\/post\/5863194720?__cf_chl_tk=n2ZwZzcoVMwJgXWpcweJIPbOVE0z.chUgVcPvi16im8-1739402653-1.0.1.1-EZxmspuswefZXl8D1S1zNeorElpIccvtGXu_w_VIJj0",cFPWv: 'b',cITimeS: '1739402653',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/5863194720?__cf_chl_f_tk=n2ZwZzcoVMwJgXWpcweJIPbOVE0z.chUgVcPvi16im8-1739402653-1.0.1.1-EZxmspuswefZXl8D1S1zNeorElpIccvtGXu_w_VIJj0",md: "l0WN.2rwy6lKuXwdOKjyzT.4IDDNT3KPDq2ItZY.1fs-1739402653-1.2.1.1-quFuqmUJYyxQlhNL6sPZN_gsmn7rCbgMfNWKa9U_598xDeLwZrl45d17QsHOfZ69zdz9cGEcdMVMAbivMVQPWhYZnLO9fpi0GMESGQjxhUNDMT_mJnGCc8NCuolNu1Fzdlquwi8PzwuSb0YsUOTYKqgm1b5mrd2SZr6YQ2xQ8GG2kH91fZ7Jiy4j_gOX6FiwEH80PhNd_X_rTLTZ9SZIRrfsFNk3bfPWywKJkMN6o13Z2h68arfgKexHZ9jwf9hi_3P4n_Q7TLBbYN1KWwEB0bWOGM1QO5ukbWwz9aUptkFXLPXtYDUTto4eaT2rY6QN4nBcgL8nhxiM2ENrfchP.aBjxoHK5jEw0zNBL_ult1lzm.dKH5WsERAG9ysjlaZgURg.6rjPDZWMHnOQJ2XtN8WtutIxSLYx8bq6XkWJKnMBY9xjjAOm4udY3lu_tiuB2o5tbse8tfgLgBEJbqYs2p0IVZU1fupcrRpVOIdOqMD.Q3mrL.u0OPuR5R4prghuTEA5Q3RJY4kEVoJSvZACNqJHC.mTU3fQAwK.rlMNlnoSqhwvcvziEY1BwhauRKQ6n5Yn7E0IjqMlUMpnBeaJOmUpSNyYfxrkg9LrXJqoSZCSMdm4J0ZOzAWl1JwOu_uyHpIUG30Syk7h22XPHyIiSYFRlP4xVZg25o2dfIpFfFeW4p9q2_R7Y0EkxSX97bEG_WMoxD8tGKvGtL0dOUMzZZ6WNq52na3BRb7wk_4CiwD3jgVnvBU5rxAYyGOc21fAm9OAg29DThZ4uAKJ4crqN.7MWBVs5_GDiLbVVX8vSxenbgJ6l0gw496VUEoX93FGKrVwY4fdNETBeJ2T2kbvjgIwMvDxcNfLNmwXOraOaih4XGGRplc_.0QnDpViYVBmqGfKGtgQmkYvaUSVpgjbCb9HciZVw2hZircyEKdf7GDt_qKu_Nw.0_TJxj4s1AfdnUrMe5gI7lOsoa_JpJLjKNLVIDTZZRlRbLCC0Dj6M_IaZvVlNn9ak5ms_3yeGpBHF4JbRajZVhU5RX2Z8gPCm5o5KL2ebEVo4ovqsispjn1TWPLnBdiC88CRczLC971ZOuM7TZ7_VvEd38u9W.1YQsS06dv3yAmWSK9EOROZTAYpz355TCS_odu2KkwIXETqLfhlNtWxsq3MkaxUwjQ2M5So_hbI0RFP9PCvTYb_DFCtqoxSggF.GRMrhSEWYe9R2YiW3f0p8bWLeNflZzRBCnpsBLKjr.XWvsNQovsSAn5_J_SV9OZXYBNUJ_ipIiaWr8ueyAOni8zxg.rBnteuAopanawZdRCqe9qquVO479VuBboC1rVOO.9OXJVauJwEKvDfoqVn1CaK_5XNEAPMeywIwpuT_3WUxiajTtJJuZO0SNgs.qJD4s8_3b9Vg5.bYBP1DRxywqavlF7AeTg0wX0tMKHteSwr06iJZ_WBaDLHr6DvdboUDFXlNgGlpNIbCa6DK6l5ceILEqLuUrWS04ZmBKtgySNqmmcPHHsQnBsEN6_6drtGMaK9IuGeyegyrPnKLXx3Os_sAkoefmciGp6WXSeAWt_Tz3dYSie2W1WNXs7_e2gdpzYHgP86diQLcxDs7UVJhWmeZoWqnBvOwDq5jwDnD.oJOnD6tikLefC6LUR1_fJqpW5GXhPecWBy5RqtpsBQVmH99CYPmW5VLndfZS3R6vmAPCn6W4Wlh60WB24oHJsXvtG2yGxn84dZpvHpqVRPS8_n4ZYvuZXky9YGZzkPfvdKuM4pMiI.IfU.TTvx2fJmvyP6yDf3zIzx3g_6E2eZW2opeDDP7EjlU8L84GOWnlUmKc2fV1u87aNpvtW2cirxGtXlxGiQXv7H.Di0zOuJATMB.bwXA05Sd9eIptyb8VRhza5tHI6IOCjja_IHRatxhwEwIG5DV0P4O4LiHoaD_kQSaKDVpTfigAqTfbOjPqUy7PD.uBtMxbZa7asc32WjJqvQXmFyRJtW0srwU9M33FWS5CI418G8WOrJZYuXe6dVzcMjN9htf791jJ5mMClldKkMv16S0KB4trjUne7npXnaiasmuYDzizRICm.uCDs7MAHrc3FnZ29zJsyjVzpUA2qKeMcwjgc_UK1u0YWcru8dVArNN19L0l37h8pH3nWcF8izIkp7NQxA6MWaxXQ3j7Pgmi5fNOIhYauQCaLNXskTCiwGiaFzH4n6iOOEPhEDUYWNLWaEOniqaHmKivT7XVmyXmofigBJ",mdrd: "DkqzOLoqmNiJ84rpD5TDi7ifWufgjFjT1M3FkU58fmY-1739402653-1.2.1.1-ysvAbLDX3Hihw.LXHL5VH2kf4o5kr_sMlNl7SAM6fyt6zr7_anyRhFOX1ZuzVGupIVCApm5Jj16Kau352efATXVCJKBtYlNweKyetUTKqW1q3FdK0Ymfbl5MwjAalhxiVPUNGtTPoBP0CJFIdISIzklz85KcZjZaq8cBuP8au.FYPYkCWbOWzNALEIc9MtPbVK5iKwm7iDS6XhmIdoW.FSHiZaiWnqCVljq8FcIosMHoLje1iZbJ6ge8ksYe7Kv8_UCbF6avSB4qFTXP6C.CRZTtdOAlJVKHVpCZSaXPpkYc9dKimyeiHZxHvvVWww.EAu76oF8RT2BCEK4EkeuuWMdIihjhVm7M_ofDQBY.tdqhAo8InnB0cRK5odgIGjH_TIeTGscR7a.Nw6t.k1hXPJchHKQ_h.i.jsHtGWTkaW2tFwKovDfQeeaByf6oubM7ZcqM5ClE2KeTfdkd.h_2A2MXslvEo2PNkqtI1jC7uvcx3_SpsAJyUR.nnpidrGQ1pmnS1oTDWgn2ik.b03WoIixl.YWGRthiFrLYWBXfzin9vuLUqqq2UBc87mDzmcumZDQrhMaYOQzlZwusDfWnbahEKpxOtitp2xOnW2WspDpgSPRilJaxZikie5i50.oxN_kVyh9g0c6PleMpQW4fzfEOBnlWjkoXY1zAlxgWwWFPOmAV5614DgxbBbhMtO552LXGBbz1tmJLSxO7KtpORHbRCDpqO2BTcl6bY9CjuQNAMsnB8D_0q9THWrnR83nvYKl9HN6aKQiZgb78Hp7paMr7wP5A2m.B1lsAHMyORNxgA_svmIkBGn4T5T351Uj_BX4LM8Hrzga9QJw5JJaUwIOz_STcsbEjldlExq.8f2NYkpCeg63Uvo3GAJfscn7jblltY623usIg6mY_YZBYjM0KSJ2WoFn8GStzQNDXOChINMNq6HUqxfLV1h6Npp_zdzyqvi5oZds4iG3h3nnQpxaJstmJRY4mKQ8YWwVESfDqzgfMEWEFjniVk5loS228t_QMg1frwyqsjWCzhK.Kriq81HgJXExhsZPhUa7ZrqcQeueDxaScyPfvrdfdkklxBWKtX6FMQLBKArTAkZdL9_U9ahFIyfdY481tOmD4UXiM9SM0312uj5U_pNDthyhsf5dYe2JumHQw.j1_Qk.iRVHNxaTTbF60rjauGXJpbI5uqZaXXkJrrlNLr9mo_VwslUPTW5Kfw3o2Vh.9pnwVywZLGrKuyDGfGYwVyk9y9nJo5klHw0KsfCNl9oiNXYQYn_6F9VmzaLn9_ETOTTwnSvbXvP5kdjsagZM_5xwE1j6c2JWuvwWSgC8DpWXw7p2hpJOAlTEZmQG8wzccXKGQ7mXLRIujkJavPlWcm6gACiMe1N79smdxYcknD5xOq_o0fg3h3uuZkhvcsxBYiiZ6tZRVLbr2aWkyIHQNyobOkQ5xcCDrp3LmG865l.GII4uK7Ol9dgLbtBX7oa6A8k1U3YA90kq76U1sKdFJJ4rDOvXOisIYIH8o8.MNmLeB8QPc22q.AkAUOXKBeQgMhJSkw5jVunt2shz43OQ3kfMXCj2tomcFoK2aSow4GleKYt9vTbpyKBIez3lQ6VgcewlTWjMgbPDpJ5pN4I.621l5d8ohYXl.3Yyvvvy5AqPtKqUfIXvR07aA3a9nOBjH1oSHd4HsebYvI7BW0Ey5kAAh_qJfKcyl40KEX.5V2i0jhZrtyEv57rxk2C9mu5ZjrDrVcAu4BVQwR9hTg4z34gYXZaN0Va3OtcgnXhiVO0yhkHvWu4JrFwEOs5cpbaUIl2fU.bzysftgR1ges4s86MsYrms"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=911054bb6d05d6b9';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\/5863194720?__cf_chl_rt_tk=n2ZwZzcoVMwJgXWpcweJIPbOVE0z.chUgVcPvi16im8-1739402653-1.0.1.1-EZxmspuswefZXl8D1S1zNeorElpIccvtGXu_w_VIJj0" + 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