New project Wappler 4 with Bootstrap 5

I started a new project with Wappler 4.0.0 Beta 13, hoping that then there will be no problems when it is no longer beta
I set up the project with Bootstrap 5, but a Bootstrap 4 folder appears in the list of files
How should I do? Should I manually delete Boostrap 4? and then?
Does anyone know how to do?