Path issue when running tests about smart-contracts HOT 2 OPEN

FAILED [ 25%]loading ligo contracts...
originating contracts...

tezos_fa2_nft_tests/test_fa2.py:164 (TestMintBurn.test_mint_burn_implicit)
args = ({},), kwargs = {'lazy_diff': False, 'try_unpack': False}

    @wraps(func)
    def wrapper(*args, **kwargs):
        try:
>           return func(*args, **kwargs)

venv/lib/python3.8/site-packages/pytezos/michelson/micheline.py:27: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = {}, try_unpack = False, lazy_diff = False, comparable = False

    def to_python_object(self, try_unpack=False, lazy_diff=False, comparable=False):
        if lazy_diff:
            assert not comparable, f'big_map is not comparable'
            res = super(BigMapType, self).to_python_object(try_unpack=try_unpack)
            removals = {key.to_python_object(try_unpack=try_unpack, comparable=True): None
                        for key in self.removed_keys}
            return {**res, **removals}
        else:
>           assert self.ptr is not None, f'Big_map id is not defined'
E           AssertionError: ('big_map', 'Big_map id is not defined')