Added message of failure to add account

src/bot/handlers.py

@@ -219,9 +219,13 @@ def _add_account5(
         login, passwd, text.encode("utf-8")
     )
 
-    database.add.add_account(engine, mes.from_user.id, name, salt, enc_login, enc_pass)
+    result = database.add.add_account(
+        engine, mes.from_user.id, name, salt, enc_login, enc_pass
+    )
 
-    _send_tmp_message(bot, mes.chat.id, "Успех")
+    _send_tmp_message(
+        bot, mes.chat.id, "Успех" if result else "Произошла не предвиденная ошибка"
+    )
 
     del data, name, login, passwd, enc_login