Cannot Renew certificates

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2017-01-12 04:16:52,639:WARNING:certbot.renewal:Attempting to renew cert from /etc/letsencrypt/renewal/vkbansal.me.conf produced an unexpected error: urn:acme:error:rateLimited :: There were too many requests of a given type :: Error creating new cert :: Too many certificates already issued for exact set of domains: vkbansal.me. Skipping.
2017-01-12 04:16:52,643:DEBUG:certbot.renewal:Traceback was:
Traceback (most recent call last):
  File "/home/vkb/.local/share/letsencrypt/local/lib/python2.7/site-packages/certbot/renewal.py", line 388, in handle_renewal_request
    main.obtain_cert(lineage_config, plugins, renewal_candidate)
  File "/home/vkb/.local/share/letsencrypt/local/lib/python2.7/site-packages/certbot/main.py", line 626, in obtain_cert
    action, _ = _auth_from_available(le_client, config, domains, certname, lineage)
  File "/home/vkb/.local/share/letsencrypt/local/lib/python2.7/site-packages/certbot/main.py", line 103, in _auth_from_available
    renewal.renew_cert(config, le_client, lineage)
  File "/home/vkb/.local/share/letsencrypt/local/lib/python2.7/site-packages/certbot/renewal.py", line 271, in renew_cert
    new_certr, new_chain, new_key, _ = le_client.obtain_certificate(lineage.names())
  File "/home/vkb/.local/share/letsencrypt/local/lib/python2.7/site-packages/certbot/client.py", line 272, in obtain_certificate
    return (self.obtain_certificate_from_csr(domains, csr, authzr=authzr)
  File "/home/vkb/.local/share/letsencrypt/local/lib/python2.7/site-packages/certbot/client.py", line 243, in obtain_certificate_from_csr
    authzr)
  File "/home/vkb/.local/share/letsencrypt/local/lib/python2.7/site-packages/acme/client.py", line 318, in request_issuance
    headers={'Accept': content_type})
  File "/home/vkb/.local/share/letsencrypt/local/lib/python2.7/site-packages/acme/client.py", line 667, in post
    return self._check_response(response, content_type=content_type)
  File "/home/vkb/.local/share/letsencrypt/local/lib/python2.7/site-packages/acme/client.py", line 570, in _check_response
    raise messages.Error.from_json(jobj)
Error: urn:acme:error:rateLimited :: There were too many requests of a given type :: Error creating new cert :: Too many certificates already issued for exact set of domains: vkbansal.me

2017-01-12 04:16:52,645:DEBUG:certbot.main:Exiting abnormally:
Traceback (most recent call last):
  File "/home/vkb/.local/share/letsencrypt/bin/letsencrypt", line 11, in <module>
    sys.exit(main())
  File "/home/vkb/.local/share/letsencrypt/local/lib/python2.7/site-packages/certbot/main.py", line 849, in main
    return config.func(config, plugins)
  File "/home/vkb/.local/share/letsencrypt/local/lib/python2.7/site-packages/certbot/main.py", line 655, in renew
    renewal.handle_renewal_request(config)
  File "/home/vkb/.local/share/letsencrypt/local/lib/python2.7/site-packages/certbot/renewal.py", line 405, in handle_renewal_request
    len(renew_failures), len(parse_failures)))
Error: 1 renew failure(s), 0 parse failure(s)