It seems the links to lexvo language IDs are implemented as datatype properties, not with object properties, so these aren't actually links (cf. lexvo:iso639P3PCode "bsg"^^xsd:string ;
in http://glottolog.org/resource/languoid/id/bash1263). You should either provide URI references or update the link metadata in https://datahub.io/dataset/glottolog.
It seems the links to lexvo language IDs are implemented as datatype properties, not with object properties, so these aren't actually links (cf. lexvo:iso639P3PCode "bsg"^^xsd:string ; in http://glottolog.org/resource/languoid/id/bash1263). You should either provide URI references or update the link metadata in https://datahub.io/dataset/glottolog.