[GNC] Process payment shuts down program

[John Zupancic]

Hello All
I am using GnuCash version 5.13 Build ID Flathub 5.13-1 with Linux POP_OS
22.04 as my desktop. Am getting the message "could not obtain the lock for
.....database may be in use by another user" I can view "read only" and
when using the "open anyway" option I can enter most data but when I try to
process a payment the program closes. The only thing that I have done
differently is that while traveling I created an invoice with the same
version of GnuCash on my travel laptop which uses POP_OS 24.04.3.
The gnucash files are kept in a Dropbox folder that is synced and mutually
available to both PCs.
Now if I open GnuCash on the laptop I get the same "could not obtain lock"
message and the program crashes when I try to process a payment.
Is there some way to let the program know that the file is not in use by
another user? Is there a workaround?
Any advice is appreciated.

John Zupancic