I am facing the above error which using connection activity in version 2018.3.2
Which package does it belong to? Could you paste a screenshot of the Properties set in the activity?
This error usually happens when a variable is not initialized. Could you please check your variables? Maybe run in debug and see what values your variables get.
@gupta.yash2 Check variable value is having null so you are getting error
@gupta.yash2 That wizard is invoked by UiPath so I’m not sure it’s an error from our side. Could you please check if the error is still present if you try to connect directly from ODBC in Windows?
This is how to open ODBC in Windows: Open the ODBC Data Source Administrator - SQL Server | Microsoft Docs