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-889929068207.mit-edu.top/post/1574680293

  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-889929068207.mit-edu.top",cType: 'managed',cRay: '910f7408bf52736e',cH: 'z.t2LT5.jL28zWHQf0l_BrW8QHIDGQJlxMhnfj45Bh8-1739393450-1.2.1.1-tUh4zZYNsX1H0_0WAUQxhyxHHAP2heHioee1Fhzj3pnVotWoQLyfXSGEbIfK4hzc',cUPMDTk: "\/post\/1574680293?__cf_chl_tk=BVZLLfI7sC0wrBkemjPgCICtjzx4ja2N09DImbHzAJg-1739393450-1.0.1.1-mPeW_WWLWxrUcHngjO4wBR9nhpNc7t4LTacAi6m.xdY",cFPWv: 'b',cITimeS: '1739393450',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/1574680293?__cf_chl_f_tk=BVZLLfI7sC0wrBkemjPgCICtjzx4ja2N09DImbHzAJg-1739393450-1.0.1.1-mPeW_WWLWxrUcHngjO4wBR9nhpNc7t4LTacAi6m.xdY",md: "GTB5HwdM0tbN_viPzh4d1YNCEt.eZ9xkGgwYZGAFwak-1739393450-1.2.1.1-Wfe0AK_DKFwE.BtRu0sjh.ZAJT4iEko0PEEJNaNb8TGW0USps3lQ0EmF0lQVnYLoTJedMoFIVs4H0Rb2mOHkxLkwmg3a4OIZrtu32R5bbGHQNgm_1T0pfkmE50kN7GPA2AkcMbo4MdkZtMeDxO8AttHHTOadNRzmgMwdNG0RRsNCp7C.Z5cNEf8PpjTnZEKNZe27G9ltivtEg.0sKcAYZ73pPliBcPrGuCinUhqDwgr6SmKdmZDrghtTvEVNQcko50PrRuSYh0HPLaWOzDpN9nZqzplxBZtOPOGEAOIeGkAsqXhQxjjO7bOI4G4YdjEli.8nDiam.6jzUvDFT0T3aHxJECo7b8cJdsVWvAO9onvFVaYyznJnaZH9F5kRF4Afi4sJnYmoC6Li4VX4jIRjwbDNkfp2nP71i595x2jzf6LrTvLbCZ3ooCs99pGQdqeV4Hhm9ztR54yfU4N25dxFfLvEqtKcw9PpS89NAd8jnsx7sQyst07LB5ESdICn6wsfc7.ftQyRWVHSaFjGOTrm6X95JDGVY55eqWztJuHI4lItNuMzD2.OjLmdvtIA.XCktOnq.rXQVKPfEUqj7Tpxbxar7oCiTPWHLpApUfK_D3QPwnadDgj7qoDBBT42bM2qvovilEujyopcEMYde3eqSco2Qi7_PNqMI8UNExuWbjk_gDAfCU0iAVwU98H.yc433ZaQs0bzsCAmY1d3ouO7OGAMqsqvoJZdaVnZCLYNDhR37rlafl6n1Yk2BL7ypvXCeORLHRQmwItDHKjyVLwoeTiABmEjIVPNrNT0lpBcMkTMNXkYdDpoIbt8GZ_ernB3DSdvoP_HXDWgePV67HDJbqaNjIkE5D2z3bhMES8J0AT8TvpKCTys.mw8fsWS_BrCktIL3oPIUHiX2sqd1PL8Uhw4bgMVwkGecKFzoaFmolpqtCL.Epo6hdP91HHikUxLRWbBk_DwcLgqKQvxwNMjdptxQm3yHwAvIHx9WbeVh2A2t_JYvXF3rfXVpe3iUZpkPr3thtaaIQk1m.k7JYNPT4gMAzK3a27zolbo1PEVRZToko872z2rRhjWwrn7D_XLomyd9GFnEeTQzYEuPuIpzDK3eaeO4BKKONAkmJilvk5rBbRn8YUu5GPdtdZNxa5EHXpEKeQ47Q.bQlfNMEdC833Pxp1Wun2JPX9AKLFyelId6ggPtQWHzjSqfmGYhc.rdWrJGkuM6XeLJ5v_Jr2ijwEIUEl23PFfEFcLO.iqqy6mBV9fNsRztVqeGRI7PUnt4jGygRc4DqheFHud3WUEvZnnjig22FY40mwBDEvWJ3dhMi2EBJJ7a1j3QwwI.Q7tCXMyLX9oyJmUWX4bDp46pW8jeQliNIFYr2lSWPdFOs29DQ4uX0rDesGBb6Byu8yKOjHytjhtp3snRx6OS5RbzpprV0MovizPN_e09IEo2ff1sMBKx0dMAE1goeZyOYmcGgpMFSKOhvf6u9l7wd3apzrVju5nZO17kIpwlYjf9qVYyehOwqA5p8GWTDZgBxKFD4eZToNwS0Lwx.v9Wf2iojBmPNpacVotZ.8lQPlm071z330SJvGKr.iL4Ei.wXMUJHZl2Nuimazb592flqGefqG4iB59oMAcz0Cmircch4_fT9sBavhrGvjDdvTF2fZsXV1z.PYVTWD3SlW3iTniMYXVDAYIhgUfTTje09f4qA5XnYOCiExLEl5TTRMtoqtaw1zxZvxgF84DYOIwdivHeMkRUP13Fj_vPaFg5ITuM3RSikKT5PD_r8R4M91VV5frmx6fPkrtoPvUQwAPfDWSLuUNUSvSOsDy83WYTq8PGP8s55nO91ND1wEVkjLcJaQ08qV_qu1JkLgU_ETbxVIs55ayYQNGGsvOt4cqTsJbNKDrUVG99Q8OKQ4GXl0p.bft_zTLNRSQ_VNfiG0KPFMRIE06CD0uo0B7faEXT2S1Y66SB5SSD7y3SkpCCsEom9Xo7lIv5MUslhN7rGHztDI6Zzk4DM0SKcNzQF_HSAJEdikF2NuuwOFqa3jZfjwdR2c4dQajcet6rZzdGz9eArXr9BaECZkwLpklxogUx8hodS.flX5a8GtgKuWj6sICRLT4uj7qKxutltauFdB7NXI3F0r14Y6epTA1zQW.sAb.37vithnZagvJ717XkkM6owpH_bJXcOJ05pQv.unDIRV05RELt2rusrBR5Rjm3NXmwGt98_jkaQYblSuTA0VAKKV8",mdrd: "rS21hzSqAAeGRtq7cfBd1M4RIEAqm5v.s9p7lNN1VGQ-1739393450-1.2.1.1-rfP9xFxVuZnSDidt6BpkeaetOgjDGCQlTyOj2_cZ.WqSem6QM6YBOFCZbHNmd342ZKolUP.td9K6Ywx1lMdxyDigVtUskp.LZASdfr111ZHYkT63rv3UPag8lS8rIxOWzgIZbfzPkqSUmdFLN0CLqStSLvgXx4zcRlVM_7cz_ZkmZQdL.aN5ATApTN7dkrsG07yMAxLVknCp7HMwKI.9ZjNaseuYWGZ0w5p.FLCFWBI7s7PeLu1BiEcliHsGrXrpKl6Xzi4yb4ekxZLkj.vRbOU3TJLtFz.r2aQKCMDRg7yjMeIll2xrm9TbJXSQWv9xzdeUO5rYIek6OPlN1D14IR72_9xb639obWLBc8417OWrMjBer73pCsZ1KenoOVfyMmFF.mrC6Yexo19Qs3A7lFXAHQ_FuSScVnDxWSrS1dw43irs2znFZXcVPqUi159JCR4IbzkRKGZtrqTCLC9N8JoseO8K1r7PKn4qrLV0gGekUL_c.2tysG0FVCirg9d4VBHHW613upuZPuAmIC.QXGdxHJvozV6TYU7FhxV9Dkg7skYtwsVNXJUmgiwfUBryHTSxVQAe8tPCrYw6sZg2nKIptwCXNqDYN5IkOdllVs1zBqBVgvbA2rNxFoeCvpMXgJ6QGbZbzA0HcA9zp6yv9gqX728UGK8NbgTOyiOgzAZtyY6MCHkRx3CyXr0XAxYMw3LrxY0_d8Trb4Z1iCsUnUnpXzrZgV4hUgQcay6QakvV3J3u6xenCNIbEMqbf11huWULAn6BkxLMCT1z_PAfl3c5fBnkePRKbvGYnwjLAKt.AG528v4qJpLLuBfCtoXFNImPS_tgPrk_W3o3QOgFwW_puoXWj02gxHvux2Z0UJ3FohvBrffVz5nvC8rPJTJ_.zZpjVENPD8v6Rn0T0jtdfpOY8QrZ1QZxCTpYswyrY6KNHhqXEiacH.z.3VoPcaZtEZn7ArYx_c3Gxp8Sb5QyVWte38QsZ3De._N1x4MGlobQIesDvvmiSARzfROt5125lvp13VkSbbdBP.9u5sdNJiXRHYOVgbmlwZLbX9AvyVRJSHtaft0qcJZfCGJeBLGerB3IemZtlsj7A07kfS8KT.kY2tupmI_r7.t38bsH5maR2El3QcqLJjQtZpbUVIH8BafTG2zj4alwxITbel7ZWdqDOVIlVyk9miH0olyh6bIg5y2AVMgQVZt6AHQUeoEnWkW2N1.2Qo_aqGTiijYTkHy0ZdVq1zf_eMICqEpPm6yk.HIZMpImCO_3jSHhXWx1L3NRRElOSXNh80rSssQiayIOtqKBLbniSBw1Phx86gfD1NCeuWxqEZBZmfF5Z_UWGtEIyEnOqQgTG_y.DbANbgH3lj3C7SdnoXC2EE0tioIXNp7dNsYNC6Fa8l3PW7XIyhholmymuk7n0jUfiKGlpR_e.7faM1Sx_N5xrdDg0aZ6.6XC.8RBi8rJONGTamOjncvQ7.0biS4QWeTgQSEf0Wjx3TefdyUJpSGKArz7wQrKqZJA5my.eRv30KYGzhG9s7vru1uhxIm99ysIefjm0KhrfJoNgmiqp0i9wDFaK.7h71sQviPAGFCIlRytRbaDeYUbwgpyUlJaruo.cLWhmC0n8pT8GpB2O0aILPFV5SJ9_6H9cdkKVxM27OX1mdHkivbeMyMDzPhGRm6fvcNjMHMXOrAVoMVq7_28KXjrrZtOpR6rNCeQiYq07Hr5OlLfEtdOmKwCAw30XHOXlrKSR7T81wbAqAw8XglP3dxL316a3BZndh9LH20M4TFPkS3XXiWZmXpKmpieO5tD_gT4yk735HSSl25mJjyeQ7z5XI"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=910f7408bf52736e';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\/1574680293?__cf_chl_rt_tk=BVZLLfI7sC0wrBkemjPgCICtjzx4ja2N09DImbHzAJg-1739393450-1.0.1.1-mPeW_WWLWxrUcHngjO4wBR9nhpNc7t4LTacAi6m.xdY" + 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