UTF8MB4 is the character set WordPress prefers for database storage because it safely supports the widest set of characters and encodings, including Emoji, enabling better support for non-English languages.
If you see this message, you should do the following steps to get your libmysql running:
1. Go to control panel and choose PHP Selector.
2. Change the PHP version to desired one and uncheck mysqli , pdo_mysql functions. After that check nd_mysqli nd_pdo_mysql functions. (nd - native driver) stays for the new driver.
3. First you uncheck it, becuase it can not be checked both (work both).
You are done.