Yes, I got a reply yesterday from Parallels support via FB Messenger. They gave me the following instructions which seems to have fixed this issue.
I suggest you to follow these steps:
1) Remove the existing virtual machine, refer to https://kb.parallels.com/5029
NOTE: Select the option 'Keep Files' if you see such a prompt.
2) Once removed, open Finder > Search '.PVM'.
3) Double click on the PVM file you find in result to start virtual machine.
4) Once started check on the issue.
Last edited by a moderator: Oct 15, 2019