I'm an absolute NOOB with EasyEngine, but a Linux Engineer, MySQL issues

I currently have 67 Wordpress sites on Cpanel with nginx reverse proxy. As I have nginx in front, none of the servers are overwhelmed but not really good performance.

So, I spun up a ee vm to test whether I can get better performance with ee.

I have three scripts that run as wordpress user and updates the mysql database directly, DAILY. Actually one runs every hour and one runs twice daily. I having no success running the script manually or as they normally run under chron. I was able to use wp commands to upload the sql database but all the scripts fail with error establishing a database connection unable to use mysql.lock.

What do I need to do to get these scripts to connect to the database?