shotwell has ceased to function on ubuntu

I have been using Shotwell on Ubuntu for several years, and have kept my software up to date with the usual update/upgrade mechanism. A few days ago shotwell failed to run with the following error message:

shotwell: error while loading shared libraries: libraw.so.19: cannot open shared object file: No such file or directory

It's telling the truth, because there is now no libraw.so.19 on my machine:

shotwell: error while loading shared libraries: libraw.so.19: cannot open shared object file      No such file or directory

but there is libraw.so.23, as locate libraw.so gets us:

/snap/shotwell/7/usr/lib/x86_64-linux-gnu/libraw.so.20/snap/shotwell/7/usr/lib/x86_64-linux-gnu/libraw.so.20.0.0/usr/lib/x86_64-linux-gnu/libraw.so/usr/lib/x86_64-linux-gnu/libraw.so.23/usr/lib/x86_64-linux-gnu/libraw.so.23.0.0

So it seems to me as if libraw.so.19 is out of date, and Ubuntu does not expect to be able to use it. So, I have several questions:

1. Is there a version of shotwell which will not demand an archaic version libraw.so?
2. If not, what application would make a good replacement for shotwell?

Thanks

Graham Whiteg.graham.white@gmail.com

See the details of the problem above for what I tried. And I was expecting to be able to find a version of libraw which shotwell would work with. If that won't work, then I would be prepared to find a shotwell replacement which I could use instead of shotwell.