Error in Import Connector Config - IdentityNow Custom Connectors

Hello all,
I am working on building an custom connector which will target Active Directory and while importing the connector specification file I am facing below error.

Below are the steps that I followed
1 - Created custom connector with Fully qualified class name
2 - Retrieved, Updated User Interface forms and source configuration template and Zip it back
3 - Imported zip file to Identity Now cloud

Please Guide