I get the following error when trying to remove the path from ALF:
[~]# sudo /usr/libexec/ApplicationFirewall/socketfilterfw --listapps | grep -A1 "/usr/local/Cellar/syncthing/0.11.19/bin/syncthing"
24 : /usr/local/Cellar/syncthing/0.11.19/bin/syncthing
( Allow incoming connections )
[~]# sudo /usr/libexec/ApplicationFirewall/socketfilterfw --remove /usr/local/Cellar/syncthing/0.11.19/bin/syncthing
The file path you specified does not exist
[~]#