After upgrading php I get this error only one site Warning: mysqli_real_connect(): Headers and clien

Hi, I have a dedicated, CentOS7 server with apache and number of WP sites loaded on it. I have recently upgraded PHP to 7.2 from 7.0 using webtatic.

Now only on 1 website I get the error message "Warning: mysqli_real_connect(): Headers and client library minor version mismatch. Headers:50560 Library:100038"

And the web screen is white. I have to turn on DEBUG to get the above message to show.