Getting errors "Unknown encoding 'UTF-16'blablabla' at ...

[Pigeo]

I'm having errors such as :
Unknown encoding 'UTF-16'Sophie LE' at /Users/pierre/perl5/lib/perl5/File/Mork.pm line 346.

And when I suppress the corresponding entry in my address book, the same error comes again and again from time to time on other entries of the address book :
Unknown encoding 'UTF-16pas-id-3CF120C728982DBE' at /Users/pierre/perl5/lib/perl5/File/Mork.pm line 346.
etc.

I can't manually correct all of those errors because my address book is too big. Therefore, it would be nice to ignore the erroneous entries and just skip to processing next entry instead of crashing the program.