Installing Concrete CMS Version 8.5.12

Having problems installing Concrete CMS Version 8.5.12?

Getting this message
Whoops\Exception\ErrorException thrown with message “Declaration of Doctrine\DBAL\Driver\PDOConnection::query() must be compatible with PDO::query(string $query, ?int $fetchMode = null, mixed …$fetchModeArgs): PDOStatement|false”

#2 Whoops\Exception\ErrorException in /homepages/24/d206799178/htdocs/RealDesigns2023/concrete/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:86
#1 Whoops\Run:handleError in /homepages/24/d206799178/htdocs/RealDesigns2023/concrete/vendor/filp/whoops/src/Whoops/Run.php:486
#0 Whoops\Run:handleShutdown in [internal]:0

That looks like it could be a php8 issue.

v8.5.12 is not php8 compatible. You can try switching to php7.4 or try installing v9.

Taking your advice and moved forward with trying to install v9

Getting a new error message

SQLSTATE[HY000] [1045] Access denied for user 'dbu2009175 '@‘’ (using password: YES)

I have double check the password to SQL database (8.0) multiple times.

Any insight here?


Turns out v9 in not compatible with MySQL 8.0, needed to use MySQL 5.7