EXR file read error (59)

I’m getting a lot of these errors in the middle of my renders lately and when it does it just stops rendering. It doesn’t matter which EXR does the lighting. My files are on a NAS but I’m having no problems besides these. Any ideas? The only solution so far is to restart my computer.

No idea what’s causing it, but just to clarify - 59 means “An unexpected network error occurred” (Windows error code ERROR_UNEXP_NET_ERR).