I encountered this on the WebGui of one of my Syncthing v1.0.0 installations:
2019-01-30 18:26:06: Decoding posted config: read tcp 192.168.168.77:8384->192.168.168.66:49617: i/o timeout
192.168.168.77 = MacOS (MacBookPro Laptop) 192.168.168.66 = Win64 (Fixed Computer)
Unfortunately, no log is available (for that moment), so I simply want to ask, what this notice is all about and how can I prevent its cause ? I never have seen this before.