For several days two of my Centos 7 machines have been displaying this error message.
Failed to check for updates with the following error message:
Failed to build transaction: gthumb-3.3.4-1.el7.x86_64 requires libexiv2.so.12()(64bit)
This is discussed here for redhat
And in it is a link to a redhat answer and bug report.
There is also a bugzilla report (I think it was bugzilla) that I saw but now can't find. In it was a description of a modified package
that was used as a work around.
Does anyone have a fix for this problem?