Run /slack upload with last lightshot file
WeeChat WeeSlack
wget https://raw.githubusercontent.com/dzfweb/weeslack-lightshot/master/lightshot.py
cp lightshot.py ~/.weechat/python/autoload
Define the lightshot path
/set plugins.var.python.lightshot.path "/mnt/c/Users/dougl/Documents/Lightshot"
/lightshot