I'am having a blank screen when using ETL Tool of Neo4j

I'm having and issue with ETL Tool : I'm trying to import an sql server database into the ETL Tool. The connection is successfully established. I started the mapping but when I click on the button "Save Mapping" I'm getting a blank screen!
Any solutions for my issue?

Ps:

  • neo4j version 4.0.4, desktop version 1.2.9, etl-tool version 1.5.0
  • I want to import from sql server database