Error running of compas_libigl

Having the error:

Traceback (most recent call last):
File “c:/Users/sercan/Documents/GitHub/compas-dev/packages/compas_libigl/scripts/”, line 4, in
from compas.datastructures import Mesh
File “c:\users\sercan\documents\github\compas-dev\compas\src\compas\”, line 185, in
from .mesh import * # noqa: F401 F402 F403
File “c:\users\sercan\documents\github\compas-dev\compas\src\compas\datastructures\”, line 42, in
from .planarisation import * # noqa: F401 F403
ImportError: bad magic number in ‘compas.datastructures.mesh.planarisation’: b’\x03\xf3\r\n’

when trying to run the (or actually any of the scripts).
Any hints how to avoid this?

have you built the package or are you trying to use it as is?