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-affpbrh2i.mit-edu.top/post/4603198725

  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-affpbrh2i.mit-edu.top",cType: 'managed',cRay: '90f3a7d42ecd5772',cH: 'kennBsPSe83H01MvulpTT31zr.LDKl2WKmKnVijC7SI-1739101970-1.2.1.1-d8G_zIFb_SzMjc_f5ecwboNNekizGxBolcTlnx55C2FaLT4J8Ys6ASzNlQIvNDIw',cUPMDTk: "\/post\/4603198725?__cf_chl_tk=UNlDDkNObjLaWBeHp8gZ4HIZUo7Fz5YOZKr80vBB87M-1739101970-1.0.1.1-uIOnZbEQj0cYaPS.Gg5qmXKq6omvhsrCLkngI6IXJ7M",cFPWv: 'g',cITimeS: '1739101970',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/4603198725?__cf_chl_f_tk=UNlDDkNObjLaWBeHp8gZ4HIZUo7Fz5YOZKr80vBB87M-1739101970-1.0.1.1-uIOnZbEQj0cYaPS.Gg5qmXKq6omvhsrCLkngI6IXJ7M",md: "7EJHQFqtMazUvKcaY.LY7L2tX69Idd7l074EEOShvOc-1739101970-1.2.1.1-AvjtzYjgLgtWyLphq86paT7J74yUxuz0C6dCVGYsc.M2La.PWFeG9exxV89zJwwUdPLs6yyVZ8TmRJ_eg0URMORko36Ijl33vsJ08XCajy0N9KySF1WSeRSppSEpuZeVY6fs9bnd4gdyzt_bzBPbt10j1n1EjujNh_TvVQzqysfXlsn6ot1q7hC6FInLsoyGAStD8_lwhxv3XwkeNBOCmAkjzGdRaFVPjahonJzxBWp.eH_QQoc8KV186UVDi4jzbFzVPlrrNvHDBiu9HvqcWTjxUUJab9UIHYemfVl8jgnD0tJfP1SopqfrKY68_qpwus35IsfamT1DWvH08I.2AC5TVVvMf7XGYaijX67QjUwNhvk75g5Ag88S1kkbhknYlN8ZwekYHF1Jt0t4D3Wr9ZZh4tYJvSDNCcN4SV0JpKEpRqcWkmgAnk2PvmBy7Kg.zeXefmSt8GtTDJ7S1IE5mu2r9Sa4CrGw.6gakRVrXi0bah7EKk_71Qc7WuFFGjG7_HfJ790nOnbag.Cs62K0._VIypEjfebAk59NMwqJl_O3lnabDUEVFW9VkgT5sP13YAtfP2RTwWzTtGtp2ZWBBRTVGMSBMeVhHWWwB5KW6eBIw9958NNAms7BAanjdjf2HiyQOfFaO3jyE5pGOW6cDMUy6rqYZk20gFoeup7EVDJtv_1XzM_LQA73emHa6WllJBzzqwugpHeBA4lmWvH3v3ahc0bDU2d4mzWmyfrf7SK9CMYtcJ5o.QV_n2KIe4QNpPG6.eAq_V.r39ldVZI2uNekHnFg07pcRvIpaIWR6HHK_NdtQx.9qoh1aFR2wL1kkJ5UN6P3z5dF3XgMSuFouc7EMFiRAozUJTu_e8afLO5dWcBjRtZMAQyqb1d472XwMJ9PK.n13HCqBMutPY2CBdZjPfS2Cy8Fll_ErJKDzAvUVBqY.rbbftbwcSyc4tbq5BlEztaw4OrXe8TMB5ZjqY0DdABUZw0qKGt0h4OrLVlo0vHNEQ.ZMcJQokWYn2wO1heOxHfxdowr9E2krdw0MJ.yU9Vkab8SkARcnYvUSC2AtlO6SGdpaDcqPo2ChAmJ.VKfT6MdWS8W8UJhVY7iM0l_BCT2OBf91Yd1ujRaaYnb.LpeD5DWxAdd14D0827h.sDiIoBTro.bo07OCAkHrprp76wlV19wB5B_EQ4AYqVKUse7RMQzM9.RBMB80XFhycr8QLyX1VFKmpjFWpGoHBjU7IbL0wUOf9wnNijJErkms7N9EFXdmhOouMXINLH7IoI7qeIiViYstj2xcm45zEYre86R4zkMgBIu3oPNwRuc3I3wuv5RPZxUDKuXtlvzEbwAIbH3zbocItml6WmLd9P3FmLVvFSj8pYa2mXb4sTDLNBMTKjSMzZH1SvOrgSSPzmJfdXWIgTdltFuR175f7KKS_ceQ1YsYSCqJsDFxP0js_INMO3FR238NyTHIhwna414Ng1dI1Md1HwokxJ8OJUgCQxCc3ObpYts2kcgwmtzEZMkb1tarIwGkw3IW3ZhmuLNiVtNkWaXEbCkXU1lU..Lc925Hc6KyzgUfusyANbeuhuMPJIIdyoWlCyef5f305A0IL.bRJX0wtId3yZGFhCwdeyyIxD2THmnCvVy5kHU.t4oA3giGhIR4Y3DIAfxgLgjzSsejHxY4MfVQe10XOK41amNbvx8cLcYXd2lOkYO0FtZBTpu83N3YqYhqRX1m6w3qQYHK8NljNxI7KoLMB_ouc9gBL_3Bql2KyNOieCHQ4xQmOQ9Qc5R1WaUfQYIcTc9ogLAfVC0McW2ktiDsUitnQtP_tiN.jY7ynPQNlOJoyxg2Wu7UX96pQRhkKxHelZQpjBATj0rseVNb8Jv1OPJRd_iX.G1aDAshEWXkFbwUFz_B5vQHLguy2Vl5qB7Fu8g.LSFDI56OgtFK38tu1awkP3Dd1QF1ctA3LfzYHgICv7RmFZmH7A8omdJFr8NKuqDox_2r6bPiIrrLUXAFzdKHTYZYsMKTVcyAzUF_diKTUWcCSvbPgGFdDyd1sU9iNAyd5XsEPkSk1i0YbRzZ_LorlAg_utR6UOuIWpQk9ciSHhtC7zTLpYeMf3.xmpnJgTgE2MKtwPHahvFle7p1CLfXQia7uHRjs7zFAX5UmfHFRjLIeLdJgfSLwsxl_ZHUnUIzjOt2f4AMdrRCk4GXiiVpCcNUPuNj1BqU_lJFkusuSo.CJGyz4EmHZ_Srzg_",mdrd: "8OUe5Eu.YtCJm3LVQjcKVCZlZmLS8tU88DLrFygVlPY-1739101970-1.2.1.1-RwvqJd_SYwtWYJeIbz31PMu3BE.sDCWi0TWGkDg5y7sxuyCSDMcycBol1QrGFfPanJENOjdtEtEKlUmXByFyAQi4dVG5p2sI3dAdz2uiQ05qfYYxuD9hN0yOltmrBxgz3PpQU4Xe7QOE_3FJrgaVvFL_rEej0du6EyniUTM4gHYG1wXLlO_BtpYByb29s4Y_JzPasstfLTiV1SFMlzUj6iji70YaHEkRzYjE8iX5BaXLbwVsdQYXQRQLO2cXDjqVdeN33ilNixDLOsbH3YCBPnVGzT_70Wf7C7OJTk6Lc2H3S7hOQaoC4_DW8Yqn2rrzqPVoErarvLboeWgpsvQopycFKbb5vcITJq.Rg9tUrglT.GKvHFHmpyaWy._qYwM_v6lLPRa7Dcjgd2pWjtNtpVeGbFcNvZORWfT0Yq7FNGlyEZMoHVPMXNo1R6RgS2raVz65hqIJFUdPGO4Gs3bU5OlrIwhYE65HBMeWe4jhVW2s_nK0zNmz8iL6MOoS8j9sQVatgTLnJr1BJTaKaL1Tss3P7YTa3j2TpXvaNaieYjx9ptoS1wlxdw6HUvsrkQO1uM1QqOnoQk2MgGI8gPebzBD.T7W4EnU3BcCvvCvlDpga5uiFzsgz.4ysg2ZivyGHJJklLrCUKdgFuXwVIISsELRyzCYdCjq6TW_6Kth0IU6KsFC_socHq6gWeCk.9ze4r3swSsrB6H5shw8qMA0p0RWUs6249492eWovfMWekNbRiq6rvGaocqzmgehiYJzLbLC.jLxEXfjKv7t7zKpEfJLXwigo5l67utBWlpc.0pp8pjxTfzpf6JOvrT7W852Iugs.FTMkney38LQdp4uDRmk_oFoBVZJ_LmdKXLPKyhq33Ojz87Rne5Y1qu_Y4FW8nT_QmsGtfTLN.tEj..5Bn.cCx1s2yzGeK2wL0w7XjiyRFF1OdNOziCa4WMER9pIhzF5VyqPQ3jtZ92x8eSDEjgx_zLbIWW0lZI69cD8_W_5DlTolKdybUjoZYhHTHu5rSxeuRNU.FPVNB_H064SQIBykjMeV3KCf3p8nDRQtet68B2bIifwGnM9aJtEju8w3dF0djbi8eVt3nvFVJJNOByhZXjJWRxkJ1jor_3x882iq7QChrkO4_xAqj7WBhypWO_g3q_LMBrgVh5ZGov8HuC8rL6LRO_VEQ1wz9WHSsRxC1mNhXUnyHHXVsDkrYdLA01htAANr7WrPGQ9WxlGc.7GS31QGgfAC25bHZ8VkfS6lPANO.su8KUhW4qhxYG4YFQve3ipznwrPsWPjhlKzkWCqvTDqaF.a2NkJpFJx.43SxXBY7XlW032DG6phqzMU06ATpl5Gponzln8rIPv8OXxc236N_0PfHDQ30VCmNnAufq1U41poSlcKyGLUTCeMzo0mCxMLZYwvvZnj5_Txt2yJAdBTlH2ypAZs0PmmhMLkzUKu.aka8pFKWlj62EMdN1elap26nXh4XYmZuYm7VIJ3OgrMViK3oZO0cPZglx.ieN0UL7OH0x22oNApgp5Xvt26Gv_9.m4E8nBTEoNCMjR_qiqxJKLDfUEtwpAGxUEH5EhXmckrZa.ZtL85kYIMv.qct9XdFz56_JeXpO7LA.jXEPbIPhcJZZrXVZPdDkJobos7BHFCWVnhI.deK2zC39PH41CybwDyZpJsP1DvdLAofajOV_KO.ixTRolshR0H.e63lwEW5nPCmzgpJ.O31pTAfQgPz3mrRGzoOGcHMh2EG9krVNLucYfF91nEJZGViQ5wn9r3CRmaKmemnIzhQ3pVA8skUc67QWmYxy7OFA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f3a7d42ecd5772';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\/4603198725?__cf_chl_rt_tk=UNlDDkNObjLaWBeHp8gZ4HIZUo7Fz5YOZKr80vBB87M-1739101970-1.0.1.1-uIOnZbEQj0cYaPS.Gg5qmXKq6omvhsrCLkngI6IXJ7M" + 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