Missing 'en' label throws an error

[dshorthouse]

wikidata-client/lib/wikidata/entity.rb

Line 17 in b4f82d6

return labels['en'].value if labels && labels['en']

The above line throws an error when the 'en' language exists for a label in a wikidata item with a description but there is no value.

[pigsonthewing]

Adding that this is the case of many items labelled with the new "mul" (mulilingual) code, instead of individual languages.

See https://www.wikidata.org/wiki/Help:Default_values_for_labels_and_aliases