Maybe it has to do with this
Also you shouldn’t be using sharedfolders path for services.
This looks very similar, my sharedfolders were not populated so that stumped Syncthing. I'm using srv now and everything is working fine. I have noticed now the the sharedfolders area populated again but I don't know why as I never done anything further. I guess there is no 100% guarantee that the sharedfolders will always be populated so that's why the advice is to use srv for services. Thanks for the response.