from av._core import time_base, library_versions error

Traceback (most recent call last):
File "tools/run_net.py", line 6, in
from slowfast.utils.misc import launch_job
File "/mnt/lustre/liukaiyuan.vendor/slowfast/SlowFast/slowfast/utils/misc.py", line 21, in
from slowfast.datasets.utils import pack_pathway_output
File "/mnt/lustre/liukaiyuan.vendor/slowfast/SlowFast/slowfast/datasets/__init__.py", line 8, in
from .kinetics import Kinetics # noqa
File "/mnt/lustre/liukaiyuan.vendor/slowfast/SlowFast/slowfast/datasets/kinetics.py", line 18, in
from . import video_container as container
File "/mnt/lustre/liukaiyuan.vendor/slowfast/SlowFast/slowfast/datasets/video_container.py", line 4, in
import av
File "/mnt/cache/liukaiyuan.vendor/miniconda3/envs/slowfast/lib/python3.8/site-packages/av/__init__.py", line 20, in
from av._core import time_base, library_versions
ImportError: /mnt/cache/liukaiyuan.vendor/miniconda3/envs/slowfast/lib/python3.8/site-packages/av/../../.././libgnutls.so.30: symbol mpn_copyi, version HOGWEED_6 not defined in file libhogweed.so.6 with link time reference