SSL_ERROR_BAD_CERT_DOMAIN Erro in Firefox Only

[dvd]

Hi

I just use certbot to create my certs. It is working fine on chrome but i have errors in firefox.
The error is
SSL_ERROR_BAD_CERT_DOMAIN

Any ideas? suggestions?

My domain: https://facceso.org
S.O. Ubuntu 16.04 + nginx + Gandi

Thanks a lot

[rg305]

The cert is for "WWW"
https://www.ssllabs.com/ssltest/analyze.html?d=facceso.org&hideResults=on

www.facceso.org shows no errors (other than: Forward Secrecy Weak key exchange WEAK):
https://www.ssllabs.com/ssltest/analyze.html?d=www.facceso.org&hideResults=on
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 (0x9e) DH 1024 bits FS WEAK 128
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 (0x9f) DH 1024 bits FS WEAK 256
TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 (0x67) DH 1024 bits FS WEAK 128
TLS_DHE_RSA_WITH_AES_128_CBC_SHA (0x33) DH 1024 bits FS WEAK 128
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 (0x6b) DH 1024 bits FS WEAK 256
TLS_DHE_RSA_WITH_AES_256_CBC_SHA (0x39) DH 1024 bits FS WEAK 256
TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA (0x16) DH 1024 bits FS WEAK 112

If you want to provide SSL for both sites, you will need to include both names in the cert request/renewals.