Please make sure all custom drivers have been upgraded for Valet 4

[BenGamlin]

I have just updated Valet and am now receiving back the message:

Please make sure all custom drivers have been upgraded for Valet 4.
See the upgrade guide for more info:
https://github.com/laravel/valet/blob/master/UPGRADE.md

I have followed all steps listed, but the issue seems to be surrounding custom valet drivers? I don't have any configured, so I'm unsure where the installed is finding these to either delete or update them.

Has anyone ran into this issue before please? Can anyone offer any advice?

Thanks, Ben

[BenGamlin]

I seem to have sorted this by running rm -rf ~/.config/valet then composer global remove laravel/valet followed by composer clear-cache, only then was I able to completely reinstall Valet.