Hi,
looks like your WiFi is failing and get restarted. However it seems causing the mount to be lost. Does it happen randomly or always the same time? Because I see Jan 14 02:00:13 within your error message. Usually thinks not happen exactly at 2 am in the morning 
something similar regarding wpa_supplicant was reported here
As this is WiFi, how is the setup of your WiFi Router / Access Point? Do you using a fixed WiFi Channel or is it set to Auto? Do you have multiple Access Points running? Is there a larger amount of other WiFi Network around you?