on heroku-20 there are some issues with current version of freetds
because of it I couldn't connect to DB
I fix them by upgrading freetds version
tds version
and changing to GnuTLS instead of OpenSSL
as I could find there were a lot problems with tds_version 7.3 over TLS 1.2
and the OpenSSL version on heroku-20 isn't really fresh, that's why better to use gnutls
on heroku-20 there are some issues with current version of freetds because of it I couldn't connect to DB
I fix them by upgrading freetds version tds version and changing to GnuTLS instead of OpenSSL
as I could find there were a lot problems with tds_version 7.3 over TLS 1.2 and the OpenSSL version on heroku-20 isn't really fresh, that's why better to use gnutls