Chatmail www_folder error

Hello.

I am running a Chatmail server.
In the chatmail.ini file I have set www_folder=../www

When running scripts/cmdeploy test I get

[gw0] [ 68%] FAILED cmdeploy/src/cmdeploy/tests/test_cmdeploy.py::test_www_folder

And also this

E       AssertionError: assert None == PosixPath('/home/myuser/chatmail/relay/www/build')
E        +  where PosixPath('/home/myuser/chatmail/relay/www/build') = joinpath('build')
E        +    where joinpath = PosixPath('/home/myuser/chatmail/relay/www').joinpath
E        +      where PosixPath('/home/myuser/chatmail/relay/www') = joinpath('www')
E        +        where joinpath = PosixPath('/home/myuser/chatmail/relay').joinpath

/home/myuser/chatmail/relay/cmdeploy/src/cmdeploy/tests/test_cmdeploy.py:40: AssertionError

What is the problem? How should I fix it?

Thank you