Syncting still connect and reconnect

Hi, I use syncthing on multiple devices. It’s ok for everyone, but I have a problem with one. It’s a Linux laptop.

LOG log (57.2 KB)

Syncthing always disconnects and connects to the daemon. Still and again after a few seconds. Do you have a solution?

Device RYY5MCT-... client is "syncthing v0.14.43-ds1" <- old and buggy, upgrade that device.