Fix fatal error in Log::add

[aXenDeveloper]

Motivation and Context

Log::add causes an error after saving. "Fatal error: Uncaught Error: Cannot use object of type ADORecordSet_mysqli as array"

How Has This Been Tested?

• Tested: Fixed fatal error in page when I saving changes in xampp and production website,

PHP: 7.4.11 MySQL: v5.5.5-10.4.14-MariaDB

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.