DB Error: connect failed, ubuntu 18

Hi, installed playsms by this guide, https://playsms.org/2018/06/26/playsms-1-4-2-on-ubuntu-18-04/

but recieved only DB Error: connect failed. Pids not empty, tried to change user password, not helped.

found problem, seems like in script, dbuser haven’t been changed to playsms even if I enter right one.

Its usually mysql db user related. See in howto how to setup one, and flush privilege before use.