× SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '9994-b579e69bdf051999e8f4ca576d4d817c-equipment by process' for key 'wisski_title_n_grams.PRIMARY': INSERT INTO {wisski_title_n_grams} (ent_num, bundle, ngram, n) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3); Array ( [:db_insert_placeholder_0] => 9994 [:db_insert_placeholder_1] => b579e69bdf051999e8f4ca576d4d817c [:db_insert_placeholder_2] => equipment by process [:db_insert_placeholder_3] => 20 )