I have being trying to build a new briefcase on BeeWere and at the end of it I encounter de error:

Question

Generating a new application 'IMC' Using app template: https://github.com/beeware/briefcase-template, branch v0.3.14 Using existing template (sha be60e3889a819b0f9b547a21e803342f79cb868e, updated Wed Apr 12 11:07:29 2023)

Log saved to D:\Disck_D\App_Python\FisrtApp\logs\briefcase.2023_07_06-22_49_40.new.log

Traceback (most recent call last): File "", line 198, in run_module_as_main File "", line 88, in run_code File "D:\Disck_D\App_Python\FisrtApp\beeware-venv\Scripts\briefcase.exe_main.py", line 7, in File "D:\Disck_D\App_Python\FisrtApp\beeware-venv\Lib\site-packages\briefcase_main.py", line 25, in main command(**options) File "D:\Disck_D\App_Python\FisrtApp\beeware-venv\Lib\site-packages\briefcase\commands\new.py", line 529, in call return self.new_app( ^^^^^^^^^^^^^ File "D:\Disck_D\App_Python\FisrtApp\beeware-venv\Lib\site-packages\briefcase\commands\new.py", line 478, in new_app self.generate_template( File "D:\Disck_D\App_Python\FisrtApp\beeware-venv\Lib\site-packages\briefcase\commands\base.py", line 835, in generate_template self.tools.cookiecutter( File "D:\Disck_D\App_Python\FisrtApp\beeware-venv\Lib\site-packages\cookiecutter\main.py", line 116, in cookiecutter ).group(1) ^^^^^ AttributeError: 'NoneType' object has no attribute 'group'

I folled the tutorial on https://docs.beeware.org/en/latest/tutorial/tutorial-0.html

Answer 1

This is caused by an incompatible change in yesterday's release of cookiecutter (https://github.com/beeware/briefcase/issues/1347). You can work around it by installing cookiecutter version 2.1.1.

Answer 2

To work around this until Briefcase v0.3.15 is released, run this command after installing Briefcase:

python -m pip install cookiecutter==2.1.1