Hi, I'm getting this error with php 7.4.25 and the 1.7.8.x branch. (alpine)
QuoteFatal error: Class PrestaShop\PrestaShop\Adapter\Entity\Attribute may not inherit from final class (Attribute) in /srv/http/PrestaShop/var/cache/dev/namespaced_class_stub.php on line 22
update: downgraded to alpine 3.9 for php 7.2 (7.2.33) and I'm still getting the same error when trying to do the installation