Hi Alin,
if you are connecting to a non TLS/SSL peer, you will probably need to omit the ssl=true parameter.
If you need to turn off certificate verification, in order to connect to a host using self-signed certificates, you may need to use the verify_ssl_cert connection option within custom connection arguments, like outlined at SQLAlchemy » Getting Started » TLS options.
Those custom connection arguments can be defined by navigating to the connection settings’ “Advanced Settings” dialog, choose “Other”, and set "connect_args" in “Engine Parameters”, similarly like described at Workaround for connecting CrateDB and Apache Superset with HTTPS.
With kind regards,
Andreas.