Lets Encrypt certificate got expired yesterday. Can any one help me how renew it

I am getting this error in my Nginx Ubuntu 16.04

command:- sudo letsencrypt renew

Processing /etc/letsencrypt/renewal/mydomain.in.conf
2017-03-01 11:58:14,035:WARNING:letsencrypt.cli:Attempting to renew cert from /e tc/letsencrypt/renewal/mydomain.in.conf produced an unexpected error: Fai led authorization procedure. www.mydomain.in (http-01): urn:acme:error:un authorized :: The client lacks sufficient authorization :: Invalid response from http://www.mydomain.in/.well-known/acme-challenge/vyPW6njqHrF0pvBlv9gWEg yatCDveBbmJFG-lqAIIIA:. Skipping.

All renewal attempts failed. The following certs could not be renewed:
/etc/letsencrypt/live/mydomain.in/fullchain.pem (failure)
1 renew failure(s), 0 parse failure(s)


  • The following errors were reported by the server:

    Domain: www.mydomain.in.in
    Type: unauthorized
    Detail: Invalid response from http://www.mydomain.in.in/.well-

    To fix these errors, please make sure that your domain name was
    entered correctly and the DNS A record(s) for that domain
    contain(s) the right IP address.

What is your domain name ?

and if you place a file at your webroot/.well-known/acme-challenge/test can you reach it at yourdomain.in/.well-known/acme-challenge/test

(to be more precise, at http://yourdomain.in/.well-known/acme-challenge/test)

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