I just wanted to upgrade Laravel Valet since a new version for PHP 7.4 was released yesterday.
After I followed the steps of https://stitcher.io/blog/php-74-upgrade-mac I can't access any page anymore (ERR_CONNECTION_REFUSED in Google Chrome) and I don't really know how to start troubleshooting.
note if you run into permission errors uninstalling via homebrew, you can add force to remove all versions of something, for example brew uninstall --force php will override permissions and uninstall all php versions. This can help if you have some old ugly ini's or rules hanging around.