[Koha] problem with link bibs

Hi list . We have problem with link bibs with authority in koha 3.20.05. when we use this command. sudo perl -I /usr/share/koha/lib /usr/share/koha/bin/link_bibs_to_authorities.pl it link but not all record/authorities and for some records it return such error. *************************************************************************************** Argument "\x{55}\x{50}..." isn't numeric in numeric ge (>=) at /usr/share/koha/lib/C4/Charset.pm line 141. ********************************************************************************************* Please any suggestions.