Repeated Corrupt Parallels .PVM file
I have seen the exact same issue, just happened again this week, Disk Utility sees an issue in that file (and a file copy isn't able to complete once it's in that state) but Disk Utility isn't able to repair (even when Mac booted to Repair mode), only fix I've seen is to kill/restore the PVM, I also do a reformat of the SSD but don't think it's necessary.

My guess is that it's an edgecase Mac filesystem bug exposed through how Parallels does PVM, perhaps related to Win10 disk mgmt that does interesting things under the covers (defrag etc. is now all hidden and happens behind the scenes).  

Similar specs (Parallels 14.1.2, Win10, Mojave (currently 10.14.3), also 500G 16GB Macbook Pro Retina 15 but mine is a late 2013.