Can't connect SSL

When I give FTP information for Automatic Verification to SSL For Free I get this error. How to solve it?

Domain "groupcontest.ml" challenge3 failed. Response from "https://acme-v02.api.letsencrypt.org/acme/challenge/L73pGeD7jLEM8Dj-0GKjT_ufYwQMUCHNVPqQDovQXes/6493463047" was: 

Error: Invalid response from http://groupcontest.ml/.well-known/acme-challenge/yyJUXT0eRk8HW1Zpk2Fx06vOaiDvpgOB7zNPRqXhqBs: "<html><body><script type="text/javascript" src="/aes.js" ></script><script>function toNumbers(d){var e=[];d.replace(/(..)/g,func"

Full Error: { "type": "http-01", "status": "invalid", "error": { "type": "urn:ietf:params:acme:error:unauthorized", "detail": "Invalid response from http://groupcontest.ml/.well-known/acme-challenge/yyJUXT0eRk8HW1Zpk2Fx06vOaiDvpgOB7zNPRqXhqBs: \"\\u003chtml\\u003e\\u003cbody\\u003e\\u003cscript type=\"text/javascript\" src=\"/aes.js\" \\u003e\\u003c/script\\u003e\\u003cscript\\u003efunction toNumbers(d){var e=[];d.replace(/(..)/g,func\"", "status": 403 }, "url": "https://acme-v02.api.letsencrypt.org/acme/challenge/L73pGeD7jLEM8Dj-0GKjT_ufYwQMUCHNVPqQDovQXes/6493463047", "token": "yyJUXT0eRk8HW1Zpk2Fx06vOaiDvpgOB7zNPRqXhqBs", "validationRecord": [ { "url": "http://groupcontest.ml/.well-known/acme-challenge/yyJUXT0eRk8HW1Zpk2Fx06vOaiDvpgOB7zNPRqXhqBs", "hostname": "groupcontest.ml", "port": "80", "addressesResolved": [ "185.27.134.229" ], "addressUsed": "185.27.134.229" } ] }

https://infinityfree.net/support/cannot-use-or-have-problems-using-lets-encrypt-or-sslforfreecom/

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