Then you should first check which certificates your websites are using.
Then delete the certificates not used with
certbot delete CertificateName
Perhaps you don't use the not working certificate, so the renew isn't a problem.
PS:
/etc/letsencrypt/renewal/www.tegi.org.in.conf
has the problem. That is expired and has only one domain name.
Yep, you have a Grade E ( tegi.org.in - Make your website better - DNS, redirects, mixed content, certificates )
| Domainname | Http-Status | redirect | Sec. | G |
|---|---|---|---|---|
| • http://tegi.org.in/ | ||||
| 172.104.190.51 | 301 | https://www.tegi.org.in/ | 0.710 | E |
| • http://www.tegi.org.in/ | ||||
| 172.104.190.51 | 301 | https://www.tegi.org.in/ | 0.700 | A |
| • https://tegi.org.in/ | ||||
| 172.104.190.51 | 200 | 5.106 | A | |
| • https://www.tegi.org.in/ | ||||
| 172.104.190.51 | 200 | 4.887 | A |
and you use the certificate with both domain names:
CN=tegi.org.in
26.12.2018
26.03.2019
expires in 35 days tegi.org.in, www.tegi.org.in - 2 entries
So delete that certificate (first, make a copy) you don't use.