Problems harvesting set names

[TobiasNx]

I try to harvest the set names from a source https://www.canal-u.tv/oai/:

$ catmandu convert OAI --url  https://www.canal-u.tv/oai/ --listSets 1
Use of uninitialized value $ns in string eq at /usr/local/share/perl/5.38.2/Catmandu/Importer/OAI.pm line 114.
Use of uninitialized value $ns in string eq at /usr/local/share/perl/5.38.2/Catmandu/Importer/OAI.pm line 119.
Use of uninitialized value $ns in string eq at /usr/local/share/perl/5.38.2/Catmandu/Importer/OAI.pm line 124.
[{"setSpec":"chaine","_id":"chaine","setDescription":[],"setName":"Toutes les chaines"},{"setSpec":"discipline","setName":"Toutes les disciplines","_id":"discipline","setDescription":[]}Oops! Can't locate object method "read" via package "XML::LibXML::Text" at /usr/lib/x86_64-linux-gnu/perl5/5.38/XML/LibXML/Reader.pm line 138.

I am not sure if the source is broken or the catmandu oai has a bug.