When clicking on a network drive error cannot allocate memory

I am running 17.3
I have a saved SMB location and if the computer is left sitting over night, I cant access the folder and get a [Unhandled error message: Cannot allocate memory]

Going to system monitor, I am not using even 1/4 of teh 16GB of memory.

Rebooting solves the problem.

Does anyone know something about this kind of network situation that requires some kind of setting change?

Thanks!

Does it go in Stand-By Or Energy Saving Mode?

standby

When You are going back of the stand By does Your Network Connection in common work or do You have Problems with this, too?