$ pecl install xdebug
$ vim /usr/local/etc/php/7.2/php.ini 

Remove the line
zend_extension=xdebug.so

$ vim /usr/local/etc/php/7.4/conf.d/ext-xdebug.ini

Add the line:
zend_extension="/usr/local/Cellar/php/7.4.4/pecl/20190902/xdebug.so

The correct path to add here is provided at the end of pecl installation. 

Restart Apache