SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '' for key 'users_username_unique' (SQL: insert into `users` (`email`, `password`, `activationCode`, `isActive`, `updated_at`, `created_at`) values (Sokolov_A_2000@mail.ru, y$KYlaTrJ4JlItR3BTQT81D.el3mt4A.Uam9DvG.6FFLKBohCaGPxQC, CMo0BXN3Dj6cM3pV, 0, 2016-06-29 13:06:38, 2016-06-29 13:06:38))