Installed on a Chromebox and connected via wifi, but disconnects overnight

Got this installed on a chromebox. Runs fine. I watch movies from a Linux desktop on the same network that shares the drive folder, so there's no server like jellyfin, just a share. I would watch an episode of some series one night and leave the chromebox on so I can just turn on the TV the next day and flip to the next episode in the folder, but the next day I'd get an access error. Only way to correct this is to reconnect to the router and/or reset the chromebox. This happens fairly consistently and is quite annoying as I just want to push a button and have it work. Is there some setting in the gui or perhaps a setting buried in ssh or even a scheduled task I can run to remedy this?

Fails immediately. Connected via wifi. How can I check if it's smb share or something else? Sorry not too familiar with the interface.