Low-Code/No-Code Developer - SAP Build C_LCNC

Hi, I´m facing a problem with the practice system in the learning journey, I’m following the APP400 “Developing with Sap Build Automation” PDF manual, in exercise #1 in SAP Build Looby, It indicates to create a project from template, a dialog window appears asking for a project name, you can enter any name and It launchs the “the project name already exists” message, It doesn´t matter what name you enter the same message is displayed not allowing to continue with the exercise. Any one of you have faced the same problem?, how dou you solve it?. Regards.