Registration problems:
  symbol ‘`_text2vec_colMaxs`’ not in namespace:
   .Call(`_text2vec_colMaxs`, x)
  symbol ‘`_text2vec_colMins`’ not in namespace:
   .Call(`_text2vec_colMins`, x)
  symbol ‘`_text2vec_collapse_collocations_cpp`’ not in namespace:
   .Call(`_text2vec_collapse_collocations_cpp`, docs, xptr_unordered_set, 
       r_sep)
  symbol ‘`_text2vec_cpp_fixed_char_tokenizer`’ not in namespace:
   .Call(`_text2vec_cpp_fixed_char_tokenizer`, x, delim)
  symbol ‘`_text2vec_cpp_get_document_count`’ not in namespace:
   .Call(`_text2vec_cpp_get_document_count`, ptr)
  symbol ‘`_text2vec_cpp_get_vocab_statistics`’ not in namespace:
   .Call(`_text2vec_cpp_get_vocab_statistics`, ptr)
  symbol ‘`_text2vec_cpp_glove_create`’ not in namespace:
   .Call(`_text2vec_cpp_glove_create`, params)
  symbol ‘`_text2vec_cpp_glove_dump_model`’ not in namespace:
   .Call(`_text2vec_cpp_glove_dump_model`, ptr)
  symbol ‘`_text2vec_cpp_glove_get_sparsity_level`’ not in namespace:
   .Call(`_text2vec_cpp_glove_get_sparsity_level`, ptr)
  symbol ‘`_text2vec_cpp_glove_get_word_vectors`’ not in namespace:
   .Call(`_text2vec_cpp_glove_get_word_vectors`, ptr)
  symbol ‘`_text2vec_cpp_glove_partial_fit`’ not in namespace:
   .Call(`_text2vec_cpp_glove_partial_fit`, ptr, x_irow, x_icol, 
       x_val, iter_order)
  symbol ‘`_text2vec_cpp_glove_set_cost_zero`’ not in namespace:
   .Call(`_text2vec_cpp_glove_set_cost_zero`, ptr)
  symbol ‘`_text2vec_cpp_hash_corpus_create`’ not in namespace:
   .Call(`_text2vec_cpp_hash_corpus_create`, size, n_min, n_max, 
       use_signed_hash)
  symbol ‘`_text2vec_cpp_hash_corpus_get_dtm`’ not in namespace:
   .Call(`_text2vec_cpp_hash_corpus_get_dtm`, ptr)
  symbol ‘`_text2vec_cpp_hash_corpus_get_tcm`’ not in namespace:
   .Call(`_text2vec_cpp_hash_corpus_get_tcm`, ptr)
  symbol ‘`_text2vec_cpp_hash_corpus_insert_document_batch`’ not in namespace:
   .Call(`_text2vec_cpp_hash_corpus_insert_document_batch`, ptr, 
       docs_batch, grow_dtm, context, window_size, weights)
  symbol ‘`_text2vec_cpp_vocab_create`’ not in namespace:
   .Call(`_text2vec_cpp_vocab_create`, ngram_min, ngram_max, stopwords_R, 
       delim)
  symbol ‘`_text2vec_cpp_vocabulary_corpus_create`’ not in namespace:
   .Call(`_text2vec_cpp_vocabulary_corpus_create`, vocab_R, n_min, 
       n_max, stopwords_R, delim)
  symbol ‘`_text2vec_cpp_vocabulary_corpus_get_dtm`’ not in namespace:
   .Call(`_text2vec_cpp_vocabulary_corpus_get_dtm`, ptr)
  symbol ‘`_text2vec_cpp_vocabulary_corpus_get_tcm`’ not in namespace:
   .Call(`_text2vec_cpp_vocabulary_corpus_get_tcm`, ptr)
  symbol ‘`_text2vec_cpp_vocabulary_corpus_insert_document_batch`’ not in namespace:
   .Call(`_text2vec_cpp_vocabulary_corpus_insert_document_batch`, 
       ptr, docs_batch, grow_dtm, context, window_size, weights)
  symbol ‘`_text2vec_cpp_vocabulary_insert_document_batch`’ not in namespace:
   .Call(`_text2vec_cpp_vocabulary_insert_document_batch`, ptr, 
       document_batch)
  symbol ‘`_text2vec_cpp_vocabulary_insert_document_batch_xptr`’ not in namespace:
   .Call(`_text2vec_cpp_vocabulary_insert_document_batch_xptr`, 
       ptr, document_batch_ptr)
  symbol ‘`_text2vec_create_xptr_unordered_set`’ not in namespace:
   .Call(`_text2vec_create_xptr_unordered_set`, x)
  symbol ‘`_text2vec_euclidean_dist`’ not in namespace:
   .Call(`_text2vec_euclidean_dist`, x, y)
  symbol ‘`_text2vec_hasher`’ not in namespace:
   .Call(`_text2vec_hasher`, x, hash_size)
  symbol ‘`_text2vec_is_invalid_ptr`’ not in namespace:
   .Call(`_text2vec_is_invalid_ptr`, sexp_ptr)
  symbol ‘`_text2vec_malloc_trim`’ not in namespace:
   .Call(`_text2vec_malloc_trim`, keep)
  symbol ‘`_text2vec_rowMaxs`’ not in namespace:
   .Call(`_text2vec_rowMaxs`, x)
  symbol ‘`_text2vec_rowMins`’ not in namespace:
   .Call(`_text2vec_rowMins`, x)
  symbol ‘`_text2vec_run_one_iter_doc`’ not in namespace:
   .Call(`_text2vec_run_one_iter_doc`, ptr, update_topics)
  symbol ‘`_text2vec_run_one_iter_word`’ not in namespace:
   .Call(`_text2vec_run_one_iter_word`, ptr, update_topics)
  symbol ‘`_text2vec_warplda_create`’ not in namespace:
   .Call(`_text2vec_warplda_create`, n_topics, doc_topic_prior, 
       topic_word_prior)
  symbol ‘`_text2vec_warplda_get_c_global`’ not in namespace:
   .Call(`_text2vec_warplda_get_c_global`, ptr)
  symbol ‘`_text2vec_warplda_get_doc_topic_count`’ not in namespace:
   .Call(`_text2vec_warplda_get_doc_topic_count`, ptr)
  symbol ‘`_text2vec_warplda_get_local_diff`’ not in namespace:
   .Call(`_text2vec_warplda_get_local_diff`, ptr)
  symbol ‘`_text2vec_warplda_get_topic_word_count`’ not in namespace:
   .Call(`_text2vec_warplda_get_topic_word_count`, ptr)
  symbol ‘`_text2vec_warplda_init_dtm`’ not in namespace:
   .Call(`_text2vec_warplda_init_dtm`, ptr, m, z_old, z_new)
  symbol ‘`_text2vec_warplda_pseudo_loglikelihood`’ not in namespace:
   .Call(`_text2vec_warplda_pseudo_loglikelihood`, ptr)
  symbol ‘`_text2vec_warplda_reset_local_diff`’ not in namespace:
   .Call(`_text2vec_warplda_reset_local_diff`, ptr)
  symbol ‘`_text2vec_warplda_set_c_global`’ not in namespace:
   .Call(`_text2vec_warplda_set_c_global`, ptr, c_all)
  symbol ‘`_text2vec_warplda_set_topic_word_count`’ not in namespace:
   .Call(`_text2vec_warplda_set_topic_word_count`, ptr, topic_word_count)
See chapter ‘System and foreign language interfaces’ in the ‘Writing R
Extensions’ manual.