Hi @kakouau79, with the latest version of KS, you are using the Platform edition, so the process of creating a project is quite different from the previous version. You need to go to Katalon TestOps first and create a new project there. See this doc: Create an Organization and Project | Katalon Docs.
Then, you need to enable Git integration on that project. See this doc: Upload test scripts from the Git repository to Katalon TestOps | Katalon Docs.
After that, you can come back to KS and open your project.
Hope this would help 
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