If-Match header error Mac client on Sierra build 2.3.2 (build 1)

This error is a repitetive one from time to time it’S poping up! waht is the matter?
It’s happening only on one Mac the other sync members seems to be okay!

any suggestions, exept of reinstalling the app, thank you !

Sitll no ideas ? The reinstallation of nextcloud-client doesn’t help…

You could report it on github.com/nextcloud/server/issues, perhaps the developers can give you more tips how to debug this issue.