php - Codeigniter app in shared hosting can't connect to remote mysql in vps

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I have a MySql DB in my VPS that can access by remote. I already try this tutorial to open remote my DB in VPS. This is the link

then, I have a CodeIgniter application that must be connected to that MySql DB.

There are the scheme:

1. The CodeIgniter app in my localhost, set the DB configuration to that MySql DB. It Work




2. The CodeIgniter app in my Shared hosting, set the DB configuration to that MySql DB. Error

I attach the error log, below here

Error log image

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