Hi Myriam,
Thanks for reaching out! It looks like you may have cloned the repository for your project and are trying to run the app templates within the main repository. I would suggest revisiting the
Create an App | Cloud Carbon Footprint steps in our documentation and make sure you're running the listed npx command that will create the directory and project templates for you. From there, you can repeat the steps of copying your input file into the CLI package and then running the command from your directory command.
You're welcome to use CCF app with a cloned version of the repo, but just know your file will need to be in the CLI directory and you should be running the command from the very root directory of your project. There will be no need to interact with the templates.
Hope that helps!
The CCF Team at Thoughtworks