[GNC] Gnc 4.5 report charts do not render (blank screen)

[Mike Commissaris]

MX-Linux 19.3_64
Built release 4.5. Textual reports work fine. However any report that
involves graphics does not render. Report loads and settings are available
but screen renders blank.
I also have versions 4.3 and 4.4 installed in their own directories - they
both render normally.
Seems like I have had this issue somewhere in the past, but I don't know
what I am missing.
Thank you,
--
Mike