The error "A call to SSPI failed, see internal exception" indicates that the security protocol (SSL/TLS) used in your PostgreSQL connector does not match the version supported by your server.
Try different SSL/TLS protocol versions in your PostgreSQL connection settings in Skyvia.
You can also contact your database administrator to confirm the SSL/TLS version configured on your PostgreSQL server and ensure the same version is specified in the connector. Additionally, please double-check that all other connection settings are configured correctly.