ImportError: attempted relative import with no known parent package

[aymenamer691]

hello sc0tfree team i need some help i installed the mentalist and when i try to open them i use python3 mentalist but i got this problem

root@kali:/mentalist# python3 mentalist
Traceback (most recent call last):
File "/usr/local/lib/python3.6/runpy.py", line 193, in _run_module_as_main
"main", mod_spec)
File "/usr/local/lib/python3.6/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "mentalist/main.py", line 1, in
from . import controller
ImportError: attempted relative import with no known parent package
root@kali:/mentalist#

i used the:python3 setup.py install
can somebody help me please