When configuring your PHP environment, you may see the following error message on your website:

To resolve this, you will need to enable the MySQL extension in your PHP settings.
Follow these steps to fix the error:
- Log in to cPanel
- Scroll down to the Software section and click on Select PHP Version.

- Now click on the Extensions tab:

- Ensure the mysqli extension is ticked:

Your website should no longer be showing the error message.