Traceback (most recent call last):


 "<console>", line 1, in <module>


 "/usr/local/lib/python3.6/dist-packages/channels/layers.py", line 15, in <module>

from channels import DEFAULT_CHANNEL_LAYER
ImportError: cannot import name 'DEFAULT_CHANNEL_LAYER'

Traceback (most recent call last):


 "<stdin>", line 1, in <module>


 "/home/whlau/faster-rcnn/detectron2/detectron2/utils/visualizer.py", line 7, in <module>

import cv2
ImportError: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.22' not found (required by /home/whlau/anaconda3/envs/detectron2/lib/python3.6/site-packages/../../libopencv_objdetect.so.4.2)
