Please post the whole error text (as text, not a screenshot). After pasting into the forum, highlight all of that text and click the "Preformatted text" button in the editor. That will make the pasted error easy to read.
It does look like a bug, though. Consider upgrading your SQL Server JDBC driver.
Ignition major version upgrades (like 8.0 => 8.1) are only free if your support contract with IA is up to date for your server's license. Otherwise you must pay a re-instatement fee. See also this discussion of IA's Long-Term-Supported version policies: