Groups and Files created not exist in Finder

I successfully created groups and some files using this plugin by implementing the below script:-

project = Xcodeproj::Project.open(project_path + project_name)

parentGroup = project.groups.select { |group| group.name == "SuperPortalApp" }

newGroup = parentGroup.first.new_group("Group2")
newFile = newGroup.new_file("NewObjFile.m")

But the main issue I am facing is that the group I created cannot be found using Finder, and the .m file I created, the name is highlighted red and the .m file icon is grayed out. I have spent many hours trying to research on what I am doing wrong... Please guide me in the right direction