Issues with "project name already in use!"

Hi to all,
I deleted a old project from wappler and from my local folder and I want to create a new project with the same name as the old one but wappler does not allow me to do it, with the error:
“project name already in use!”

How can I clean wappler database or logs that enable me to give the same name to my new project ?

thank you in advance for the help
Vasco