pyside6-deploy python script error

In my {PythonInstallationPath}/site-packages/PySide6/scripts/deploy/python_helper.py file, I encountered an error: "Cannot find package 't'."(sort of it).

So I checked the source file and I found these code in the attachment file.

 In normal, we want to pass a list with one package ['virtualenv'], but you passed it with a string 'virtualenv', so it won't be successfully installed.

So do you have any fix on it, or just let me simply change the source file?