unable to load function gdFree

[wmgilligan]

Testing a new setup - diagtools shows system library GD is registered.
Miva Merchant Virtual Machine 5.34 - Apache/2.4.46 () PHP/7.2.34

When using this code, I receive the gdLastError() as shown in the subject:
<MvASSIGN NAME = "l.source_gdimage" VALUE = "{ gdImageCreateFromPngMem( l.image_data ) }">

Why doesn't gdFree load, when diagtool shows it is registered?

[wmgilligan]

Additional info from mivaconfi:
<SYSTEM-LIB CODE="GD" LIBRARY="/usr/lib64/libgdbm.so.4">

[ILoveHostasaurus]

ligbdbm has no relation to GD or image functions; you need libgd.

[wmgilligan]

Awesome! Thank you. New machine, so I did all the yum updates (including php-gd), but apparently I never did the most obvious... yum install gd
Now - perfection.
Thanks