NLTagger.requestAssets(for: language, tagScheme: .lemma) never returns I am new to NLP. I need to Lemmatise a sentence. But the request for assets never returns. Here is the code: if !NLTagger.availableTagSchemes(for: .word, language: .english).contains(.lemma) { NLTagger.requestAssets(for: .english, tagScheme: .lemma) { result, error in print("Never reaches here") } } I tried this on simulator. It never returns any response. Do I need to enable any settings to make it start working?