Error: FileLock.acquire: poll_intervall is not present.

[khodabakhshih]

i ran the demo in google colab and get the following error? would you please tell me, how can i fix it?

Traceback (most recent call last):
File "/usr/lib/python3.7/runpy.py", line 193, in _run_module_as_main
"main", mod_spec)
File "/usr/lib/python3.7/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/usr/local/lib/python3.7/dist-packages/allencv/service/server_simple.py", line 36, in
from allennlp.common import JsonDict
File "/usr/local/lib/python3.7/dist-packages/allennlp/common/init.py", line 1, in
from allennlp.common.from_params import FromParams
File "/usr/local/lib/python3.7/dist-packages/allennlp/common/from_params.py", line 22, in
from allennlp.common.lazy import Lazy
File "/usr/local/lib/python3.7/dist-packages/allennlp/common/lazy.py", line 5, in
from allennlp.common.params import Params
File "/usr/local/lib/python3.7/dist-packages/allennlp/common/params.py", line 33, in
from allennlp.common.file_utils import cached_path
File "/usr/local/lib/python3.7/dist-packages/allennlp/common/file_utils.py", line 78, in
class FileLock(_FileLock):
File "/usr/local/lib/python3.7/dist-packages/allennlp/common/file_utils.py", line 96, in FileLock
def acquire(self, timeout=None, poll_interval=0.05):
File "/usr/local/lib/python3.7/dist-packages/overrides/overrides.py", line 88, in overrides
return _overrides(method, check_signature, check_at_runtime)
File "/usr/local/lib/python3.7/dist-packages/overrides/overrides.py", line 114, in _overrides
_validate_method(method, super_class, check_signature)
File "/usr/local/lib/python3.7/dist-packages/overrides/overrides.py", line 135, in _validate_method
ensure_signature_is_compatible(super_method, method, is_static)
File "/usr/local/lib/python3.7/dist-packages/overrides/signature.py", line 95, in ensure_signature_is_compatible
super_sig, sub_sig, super_type_hints, sub_type_hints, is_static, method_name
File "/usr/local/lib/python3.7/dist-packages/overrides/signature.py", line 136, in ensure_all_kwargs_defined_in_sub
raise TypeError(f"{method_name}: {name} is not present.")
TypeError: FileLock.acquire: poll_intervall is not present.