Error on install - concrete 8.5.9

Developing with Concrete
1

what does this mean please?

Whoops \ Exception \ ErrorException (E_COMPILE_ERROR)

Declaration of Doctrine\DBAL\Driver\PDOConnection::query() must be compatible with PDO::query(string $query, ?int $fetchMode = null, mixed …$fetchModeArgs): PDOStatement|false

thanks

2

ConcreteCMS versions before 9.0 shipped with Doctrine DBAL versions that are not PHP 8.1 compatible.

If you’re running ConcreteCMS 8.x on PHP 8.1+, you will see this error immediately.

Fix:

  • Either upgrade ConcreteCMS to 9.x, or
  • Downgrade PHP to 7.4 (the last version fully compatible with ConcreteCMS 8.x)