I tried to use certbot but this error occured i kindly accept any help :)

Help
1 
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Renewing an existing certificate for dmt.mn and 4 more domains

Certbot failed to authenticate some domains (authenticator: webroot). The Certificate Authority reported these problems:
  Domain: autodiscover.dmt.mn
  Type:   unauthorized
  Detail: 194.233.89.27: Invalid response from http://autodiscover.dmt.mn/.well-known/acme-challenge/aAcond4ogHo4FaP7UNA4up6fw01F5DZxp9QE7oB0Bq8: "<!DOCTYPE html>\n<html lang=\"en\">\n\n<head>\n  <meta charset=\"utf-8\">\n  <meta name=\"viewport\" content=\"width=device-width, initial-s"

  Domain: dmt.mn
  Type:   unauthorized
  Detail: 194.233.89.27: Invalid response from http://dmt.mn/.well-known/acme-challenge/O2vBSJ4Cblrjpm_5CR3PD_rxpqzz6dS4jlMjBCV3GT8: "<!DOCTYPE html>\n<html lang=\"en\">\n\n<head>\n  <meta charset=\"utf-8\">\n  <meta name=\"viewport\" content=\"width=device-width, initial-s"

  Domain: mail.dmt.mn
  Type:   unauthorized
  Detail: 194.233.89.27: Invalid response from http://mail.dmt.mn/.well-known/acme-challenge/DlAO_e12TJFOWz95TGWbLPCj_1xX4naKiXsdChAHGv4: "<!DOCTYPE html>\n<html lang=\"en\">\n\n<head>\n  <meta charset=\"utf-8\">\n  <meta name=\"viewport\" content=\"width=device-width, initial-s"

  Domain: autoconfig.dmt.mn
  Type:   unauthorized
  Detail: 194.233.89.27: Invalid response from http://autoconfig.dmt.mn/.well-known/acme-challenge/Dr_JuCCoo2afX9wAGQegq4P_FtrMOwDrPaX0Fy0FOYI: "<!DOCTYPE html>\n<html lang=\"en\">\n\n<head>\n  <meta charset=\"utf-8\">\n  <meta name=\"viewport\" content=\"width=device-width, initial-s"

  Domain: www.dmt.mn
  Type:   unauthorized
  Detail: 194.233.89.27: Invalid response from http://www.dmt.mn/.well-known/acme-challenge/GKwF24ufScDCxrqUD_URQv4PUc6YeT0eBgA1-wLJ2H4: "<!DOCTYPE html>\n<html lang=\"en\">\n\n<head>\n  <meta charset=\"utf-8\">\n  <meta name=\"viewport\" content=\"width=device-width, initial-s"

Hint: The Certificate Authority failed to download the temporary challenge files created by Certbot. Ensure that the listed domains serve their content from the provided --webroot-path/-w and that files created there can be downloaded from the internet.

Some challenges have failed.
Ask for help or search for solutions at https://community.letsencrypt.org. See the logfile /var/log/letsencrypt/letsencrypt.log or re-run Certbot with -v for more details.
2

When you opened this thread in the Help section, you should have been provided with a questionnaire. Maybe you didn't get it somehow (which is weird), or you've decided to delete it. In any case, all the answers to this questionnaire are required:

Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.

My domain is:

I ran this command:

It produced this output:

My web server is (include version):

The operating system my web server runs on is (include version):

My hosting provider, if applicable, is:

I can login to a root shell on my machine (yes or no, or I don't know):

I'm using a control panel to manage my site (no, or provide the name and version of the control panel):

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot):

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