I've created a driver for Perch Runway, and come across the following issue:
I've done some further debugging, and the following line in admin/setup/index.php seems to cause the issue:
Now, it's not an issue on normal hosting so it's not a Perch problem. It looks like Valet doesn't seem to let us use relative header locations, it seems to default to root. If anyone has any advice on how to fix this, it'd be super appreciated!