I faced the subj error after updating Perl package. It appears, Scalar::Util package is shipped with C-compiled modules which are not properly updated by yum. The workaround is manual package reinstalling:
1 | wget http://search.cpan.org/CPAN/authors/ id /G/GB/GBARR/Scalar-List-Utils-1.23. tar .gz && \ |
2 | tar zxvf Scalar-List-Utils-1.23. tar .gz && \ |
3 | cd Scalar-List-Utils-1.23 && \ |
4 | perl Makefile.PL && \ |
5 | make test install && \ |