Launch the export project from ionic creator


I am working on windows 10, with sublime text or atom.
I have created a project in ionic creator, I have made the UI.
So right now I have export the project I have my files .html, .js & .css
I want to launch it with
ionic serve
But I receive this answer :
[ERROR] Sorry! ionic serve can only be run in an Ionic project directory.
I understand the reason for this error but I don’t know how to launch my project from ionic creator.
I also have made an application from the dashboard and from it I have followed the instruction by creating a project with a slide menu for example and it works.
If you have any clue for me to understand how it works, I will appreciate this.
Thank you.

try making a new ionic project with ionic start and replacing its src folder with the src folder that you got from ionic creator