Installing Drupal

Hello,

I've been reading and trying all the possible solutions on internet about this subject but none were efficient. I am actually working as an intern and have very limited tools, for example I am not allowed to add modules such as Backup & migrate.

They gave me all the website's files and the whole (large) .sql database.

I've tried installing a fresh version of drupal and then adding the full database + copy all the files with the correct settings.php of course, or directly copy all the files and db but that just redirects me to install.php.

14 hours ago I could install drupal with composer create-project drupal-composer/drupal-project:8.x-dev drupal8 --stability dev --no-interaction - now installation always fails with following error message:

Hello community!  

I am tring to installa drupal using composer and am getting the following error. Help resolve it thanks

New to drupal, so please bear with me. My client has given me their "Sites All" themes and libraries folder as well as their site-specific "themes", "files", "settings.php," a list of their modules, and a database sql dump. My job is to take this and get it up and running on a different server. The problem: When I load their sql data into a new database to use for drupal, I'm not able to view the drupal dashboard-like thing. When I use a clean database to start installation with drupal, I am able to view the dashboard properly, but loading their data gives me sql errors.

I have installed Drupal manually few weeks ago. At the moment I want to switch to composer installation, so I will be able to update Drupal by composer. After backuping site, I try to follow: https://www.drupal.org/docs/develop/using-composer/using-composer-to-man...