Prestashop 1.6 on FlyWheel


I have the last version of FlyWheel. I created a Wordpress website. Everything works. Then I delete all file in app/public and paste the prestashop 1.6. in local database I delete or table and import prestashop schema and data. Change IP, db, user and password in Prestashop \Local Sites\prestashop16\app\public\config\settings.php. In the end I have error:

ERROR 2019/10/10 - 20:40:11: Link to database cannot be established:SQLSTATE[HY000] [2002]
at line 102 in file classes/db/DbPDO.php

Where is the problem?

Thanks for help.