Insufficient Security with RabbitMQ 3.7.15 and Erlang 22.0.1 / 22.0.2 on centOS 7.6 - rabbitmq

Question

Observing an Insufficient Security error after upgrading RabbitMQ server to 3.7.15 with Erlang 22.0.1 / 22.0.2 on centOS 7.6.
Initial State of system where SSL was found to be working:
CentOS Linux release - 7.5
RMQ - 3.7.7-1.el7
Erlang - 20.3.8.2-1.el7.x86_64
SSL was found to be working even when CentOS was upgraded to 7.6 and RMQ to 3.7.15. Checked after RMQ restart.
However when Erlang was upgraded to erlang-22.0.2-1.el7.x86_64.rpm, SSL stopped working. (After RMQ restart)
RabbitMQ config:
[
{rabbitmq_management,
[{listener, [{port, 15671},
{ssl, true},
{ssl_opts, [{cacertfile, "<path>/cacert.pem"},
{certfile, "<path>/cert.pem"},
{keyfile, "<path>/key.pem"}]}
]}
]},
{rabbit, [
{log_levels, [{connection,info}]},
{tcp_listeners, []},
{ssl_listeners, [5671]},
{ssl_options, [{cacertfile,"<path>/all_cacerts.pem"},
{certfile,"<path>/cert.pem"},
{keyfile,"<path>/key.pem"},
{depth, 5},
{verify,verify_peer},
{fail_if_no_peer_cert,false}]},
{auth_mechanisms, ['PLAIN','AMQPLAIN','EXTERNAL']},
{loopback_users, []},
{ssl_cert_login_from, common_name}
]}
].
RabbitMQ enabled pluggins:
[rabbitmq_auth_mechanism_ssl,rabbitmq_management,rabbitmq_shovel,rabbitmq_shovel_management].
Please help.
Edit 1:
Updated the rabbitmq.config in this manner. Cert based auth is working now.
[
{rabbitmq_management,
[{listener, [{port, 15671},
{ssl, true},
{ssl_opts, [{cacertfile, "<path>/cacert.pem"},
{certfile, "<path>/cert.pem"},
{keyfile, "<path>/key.pem"}]},
{ssl, [{versions, ['tlsv1.3', 'tlsv1.2', 'tlsv1.1', 'tlsv1', 'sslv3']},
{ciphers,
[{ecdhe_ecdsa,aes_256_gcm,aead,sha384}, {...}]}
]}
]},
{ssl, [{versions, ['tlsv1.3', 'tlsv1.2', 'tlsv1.1', 'tlsv1', 'sslv3']},
{rabbit, [
{log_levels, [{connection,info}]},
{tcp_listeners, [5672]},
{ssl_listeners, [5671]},
{ssl_options, [{cacertfile,"<path>/all_cacerts.pem"},
{certfile,"<path>/cert.pem"},
{keyfile,"<path>/key.pem"},
{ssl, [{versions, ['tlsv1.3', 'tlsv1.2', 'tlsv1.1', 'tlsv1', 'sslv3']},
{ciphers,
[{ecdhe_ecdsa,aes_256_gcm,aead,sha384}, {...}]},
{depth, 5},
{verify,verify_peer},
{fail_if_no_peer_cert,false}]},
{auth_mechanisms, ['PLAIN','AMQPLAIN','EXTERNAL']},
{loopback_users, []},
{ssl_cert_login_from, common_name}
]}
].
However, shovels with amqps with port 5671 still error out.
[error] <0.7391.6> Shovel 'ShovelTest' failed to connect (URI: amqps://<ip>:5671/<blah>): {tls_alert,{insufficient_security,"received SERVER ALERT: Fatal - Insufficient Security"}}
Shovels work fine with ampq with port 5672 though.
Please help.